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children's eye safety month

August is the global Children’s Eye Health and Safety Month – a perfect reminder for you to have your children’s eyes checked.

Give your children the best opportunities to develop the best possible vision they can, which is why regular vision checks are of absolute importance.

All children’s eyes are mostly healthy, but you should have them examined during scheduled pediatric visits which should ideally start from the age of three onwards.

Symptoms of Eye and Vision Problems in Children

You as parents should be aware of all the signs that indicate whether your child has any vision-related problems such as these:

  • Wandering or crossed eyes
  • A family history of childhood vision related problems
  • Lack of interest in reading or looking at distant objects
  • Squinting or turning his/her head unusually while watching television
  • Eyes are constantly watering or tearing
  • The eyelids are swollen or bloodshot
  • The child is blinking more than usual
  • Child is complaining of blurry vision; eyes are itchy or burning
  • Feel dizzy or ill after doing some close-up vision related activity

Protect Your Child’s Eyes

We should all utilize this month to teach our children about the importance of eye safety and also implement it with immediate effect.

You can protect your child’s eyes by:

  • Making it mandatory for your kids to wear protective eyewear while taking part in any sports or recreational events.
  • Allowing them to play with toys that have no sharp or protruding edges or corners.

The Role of Eye Safety in Your Child’s Life

Now that you have done everything that you possibly can to ensure that your child’s eyes are safe. Whether they are budding sportsmen or simply just playing with their friends, there are a lot of injuries that they are exposed to. According to current stats, roughly more than 12 million children suffer from some kind of vision impairment and eye injuries which are often the cause of eye injuries, of which 42,000 sports-related eye injuries.

Take precautions and protect your children’s vision. This August, give the apple of your eye the gift of clear vision. Be a Super Mom and bring your child to InSight Vision Center for a comprehensive eye checkup.

carrots improve eyesight

One of the most common tricks that parents use to encourage or trick their kids to eat vegetables is to amplify the ‘good’ a particular vegetable can provide. The common ones include eating spinach for strength, broccoli to make you smarter, drinking milk will make you taller etc. But one of the oldest and the most popular saying remains – ‘Eat carrots to get excellent eyesight’. Tricking younger kids may be simpler but there may come a time when they will start questioning the authenticity of such claims.

Let us delve into the history to see of how this adage came into existence and became one of the most used statements by parents across the world.

The History

Bugs bunny’s favorite food became associated with strong eyesight during World War II when the British Royal Air Force managed to gun down German aircrafts even at nights. The air force fabricated a story of how their skilled fighter pilot John “Cats’ eyes” Cunningham attributed his excellent night vision due to a carrot-enriched diet. Soon, everyone began to eat more carrots get stronger night vision so that they could work in the dark as well. However, it turned out to be mere propaganda as the Air Force was, in fact, utilizing radar to locate the German bombers.

Why Should You incorporate Carrots in Your Diet

Even though it started as a myth, having carrots do help in maintaining healthy eyes due to the presence of the following nutrients:

Vitamin A

It is extremely essential for healthy eyes. Carrots are rich in beta-carotene, a carotenoid pigment which is an essential precursor for vitamin A. If you don’t get enough Vitamin A, you risk getting cataracts, macular degeneration and xerophthalmia (A disease characterized by dry eyes, corneal ulcers and swollen eye lids). Deficiency in vitamin A also leads to blindness.

Lutein

This is an important antioxidant which is present in carrots. Food products that are rich in lutein are known to increase the pigment density in the macula. When the pigment density increases, the retina is protected more, thus reducing the risk for macular degeneration.

How Many Carrots is too Many Carrots

Even though carrots are rich in nutrients, binging on them won’t improve your eyesight significantly. Once there is enough beta-carotene in your body, it will no longer convert to vitamin A. In fact, it’ll regulate the excess vitamin A to prevent accumulation of toxic levels of the substance in the body. Though there is no ‘ideal number’ of carrots one should consume, it can safely be said that having a moderate amount in your daily diet will be helpful. Most eye and vision problems are either genetic, due to aging, disease or an accident. Just eating carrots and infusing beta-carotene and lutein will not help in such situation. The right medication and eye treatment are essential.

We can safely say that eating carrots every day will not sharpen your eyesight beyond a certain measure and will definitely not restore the vision to 20/20, nor can it correct certain optical deformities such as astigmatism, diseases like glaucoma and conditions like strabismus. If you have weak eyesight, using prescribed glasses or contact lenses is recommended. That definitely doesn’t mean that carrots don’t make a healthy snack – eat it to satiate those hunger pangs between meals and pack it in the lunches for your kids. But don’t let them believe that they can ditch their glasses just because they will get superman-like vision just by eating carrots.

When you parents and grandparents told you to eat carrots for good vision, they weren’t entirely wrong. But if you are facing vision problems, visit a doctor instead of just relying on a carrot-rich diet.

laser skin surfacing

Laser Skin Resurfacing, also known as a laser peel, laser vaporization and lasabrasion is a technique to use laser beams to reduce facial wrinkles, scars and blemishes. With laser technology, surgeons have a higher level of control and precision around the delicate areas, thus offering better results.

What is Skin Laser Resurfacing

It’s a popular cosmetic procedure that helps in rejuvenating the skin through laser technology. Along with facial scars, wrinkles and blemishes, it reduces the effects of aging, sun and some facial disorders. It removes the outer, damaged skin and gives way to a smoother, younger, healthier-looking skin.

How Does It Work

The surgeon uses laser to send short, concentrated pulsating beams of light at irregular skin. The laser beam removes the epidermis (the outer layer of the skin), and simultaneously heats the underlying skin, which is called the dermis. This stimulates the growth of new collagen fibers. After the treated area heals completely, firm and smoother skin is formed.

Ideal Laser Skin Resurfacing Candidates

The ideal candidate for this procedure is someone with an elastic, non-oily skin that isn’t prone to scarring after minor injury. Patients with wrinkles, lines and uneven pigmentation can opt for laser skin resurfacing. Those with superficial facial scars such as acne or chickenpox scarring, birthmarks, enlarged oil glands etc. can also consider undergoing this procedure. It is crucial that the person is free of any medical conditions, including prescription medication and existing health conditions which may cause unnecessary risk during the treatment or recovery period. Before going in for the procedure, the candidate should have realistic expectations of the results.

The Procedure

A local anesthesia is administered through an injection at the treatment site. If necessary, an oral sedative may also be used. Once the anesthesia is under effect, the surgeon will use a special laser to carry out the procedure. A controlled, pulsated beam of light is given which vaporizes the epidermis and reveals the younger-looking skin that lies underneath. The growth of new skin cells is also stimulated.

The full procedure can take up to 2 hours while a partial procedure doesn’t last longer than 30 to 45 minutes. A concentrated laser beam minimizes the complications by restricting the amount of heat damage done to the skin.

The Benefits of Laser Skin Resurfacing

  • Improves the overall texture of the skin that has become rough due to sun damage
  • Enhances the youthfulness of the skin
  • Diminishes the appearance of age spots, wrinkles, skin discoloration, birthmarks etc.
  • Removes skin growths such as moles, warts
  • Can be used for treating skin cancer in earliest stages
  • Moderate facial scarring results from injury or surgery can be minimized

Risks Involved

  • Bacterial infection or abnormal healing
  • Reactivating herpes cold sores
  • Hyperpigmentation or Hypopigmentation
  • Scarring or burns from laser’s heat
  • Smoking increases the duration of recovery period

Inform your doctor if you have any medical conditions, drug allergies or immune disorders before the procedure. This helps them in preparing better for the surgery and administering the right medication for your recovery without any threat of risks.

Expected Recovery Time & Results

The recovery period lasts around two weeks. During this time, the treated skin will heal and a new layer of skin will appear. However, the redness of the skin might persist for several months. Depending on the extent of the treatment, patients should take a break of one to two weeks from work immediately after the procedure.

If you are considering getting a laser skin resurfacing, make an appointment with us today for a consultation.

Human Eye vs Eagle Eye

Eagles are beautiful birds known for their majestic frame and incredible hunting abilities. They have the reputation of having one of the best visions on the planet. What makes ‘eagle eyes’ a thing of envy? Let’s find out.

What is Visual Acuity?

Visual acuity is the eye’s ability to separate details of an object without any blur. The normal or a ‘good’ vision for a human is 20/20. Eagles, however, have retinas with cones and have a much deeper fovea—a cone-rich structure in the back of the eye. These give them a visual acuity of an impressive 20/5, or 20/4 which allows them to hunt even the tiny prey from hundreds of feet up in the air.

How Is the Eagle’s Vision Measured?

There is a scientific set-up to determine the strength of eagle’s vision. The birds are trained to fly down a long tunnel where two TV screens are kept at the end. One screen has a display of striped pattern to attract the eagle towards it and when they land on that screen, they are given a treat. The birds’ acuity is tested by changing the width of the stripes and determining from what distance the eagles begin to turn in the correct direction.

The Range and Vividness of Colors

Eagles have the ability to see colors more vividly than humans can. They can even see ultraviolet light and pick out more shades of one color. Their ability to even see the UV light allows them to see the bodily traces left by their prey. Mice’s and other small prey’s urine is visible to the eagles in the ultraviolent range, making them easy targets even a few hundred feet above the ground.

Positioning of the Eyes

Human eyes are positioned at the front of the heads, giving us a binocular vision and a peripheral vision of just 180 degrees. We can only see complete images when we use both eyes, as closing one will block a portion of vision that was visible with that eye. The use of both eyes gives us that ability to determine the depth of field and help us realize the speed of any moving object. Unfortunately, our peripheral vision is quite poor.

On the other hand, an eagle’s eyes are rotated towards the front of the head and are angled 30 degrees from the midline of the face. This allows them to have a 340 degree field of vision. Their peripheral vision is quite impressive, which greatly assists these predatory birds.

Ability to Focus Clearly

The ability to switch between seeing things that are near and far clearly require quick changes in the lens of the eyes, which is known as accommodation. As humans age, the muscles required to change the shape of the lens get stiff and become less effective, requiring us to wear glasses to see distant and nearby things equally clear. However, the eagles not only have a lens that changes the shape to accommodate the changing distance but even their cornea has the ability to change shape to better focus on near and far objects.

Can We Get Eagle Eyes?

It is obvious to want vision like an eagle but the characteristics and dimensions of human eye’s lens, cornea, iris, retina etc. limits our visual acuity. The best vision we can achieve is 20/10 or even 20/8. LASIK can help you in getting 20/20 vision even if you have poor vision, but achieving the visual acuity of an eagle is next to impossible.

While attaining eagle eyes will remain a fantasy for us, you can improve your eye sight through LASIK. Visit InSight Vision Center and make an appointment today to explore your options.

Prevent AMD with right nutrition

Age-Related Macular Disease or AMD is an acquired ocular disorder that occurs in people over sixty years of age. It is the leading cause of vision loss in the US. This eye disease affects the central part of retina known as the macula and destroys it through retinal detachment. Macula is responsible for providing sharp and clear central vision that is required for reading, writing and other visually demanding activities such as driving, stitching etc. The risk of AMD increases with age.

The severity and nature of AMD differs from one person to the other. Many experience some or full degree of loss of central vision in one or both the eyes. As AMD progresses, it diminishes the ability of the individual to read, write, walk or drive safely, even recognize faces and perform everyday tasks. Around 90% of AMD patients have a non-exudative or dry form of the disease that results in the development of dry, atrophic scars in the macular area. These patients experience slower, more gradual loss of vision. The other 10% develop an exudative or wet form – this results in the leaking of fluid beneath the retina, with a greater and more rapid loss of central vision.

Apart from aging, other risk factors include family history, poor diet, cardiovascular disease, obesity, lack of physical exercise, smoking, and high blood pressure.

How Can You Prevent AMD through Nutrition

There are studies that prove that diet, not just supplements, can greatly help in preventing AMD. Diets with above-median levels of beta-carotene, which includes lutein and zeaxanthin, vitamins C and E, and zinc have been associated with a 35% reduced risk for the disease. Additionally, food sources that are rich in omega-3 fatty acids are also highly effective. Incorporating plenty of green leafy vegetables along with fish is highly recommended to prevent AMD.

Let us look at some food sources to obtain the necessary nutrients:

  • Veggies and fruits with carotenoids (beta-carotene, lutein, zeaxanthin) and vitamin C: Broccoli, peaches, kale, apricots, pumpkin, carrots, mangoes, bell peppers, tangerines, cantaloupe, avocado, spinach, grapefruit, blueberries, green peas, honeydew, collards.
  • Foods high in vitamin E: Tofu, almonds, sunflower seed kernels, fortified soymilk, peanuts, turnip greens, canned tomato products, wheat-germ oil, sunflower oil, fortified cereals
  • Foods that provide zinc: Whole-wheat and buckwheat flours, lamb, fortified cereal, dark meat poultry, Alaskan king crab, pork, pumpkin seeds, lean beef, dried beans, bulgur
  • Fish high in omega-3 fatty acids: Salmon, albacore tuna, mackerel, sardines, lake trout, herring

Decelerating the Progression of AMD

Though most dietary supplements cannot completely prevent AMD, they can definitely slow down its progression in those who are already suffering from the disease. High levels of vitamins C and E, beta-carotene, zinc and copper from supplements are known to reduce the risk of progression to advanced AMD by 25% after 5 years. The effect persisted for another 5 years of follow-up after the study.

Things to Do

Follow a diet that provides carotenoids such as beta-carotene, lutein and zeaxanthin, vitamins C and E, zinc and omega-3 fatty acids. Not only will it boost your health but also help in preventing AMD. If you have a family history of AMD, consult with your doctors regarding the supplements you need. Make necessary lifestyle changes – quit smoking, exercise regularly, keep your blood pressure and cholesterol levels at acceptable levels.

If anyone over the age 60 in your family is suffering from vision problems, get it checked immediately at InSight Vision Center. Make sure they follow the right diet and ea nutritious food to prevent AMD or reduce the speed of its progression.

Facts about Retinal Detachment

The retina is that part of the eye that not only serves as a light sensitive wallpaper but also sends visual messages to the brain. When a layer of the retina is either lifted or moves from its position inside the eye, the condition is known as retinal detachment. This condition is considered to be a medical emergency; therefore, it must be corrected and treated right away to prevent permanent loss of vision.

Causes of Retinal Detachment

Retinal detachment can be caused by a number of factors. They include the following:

  • Tears on the retina also referred to as retinal breaks or retinal tears
  • Injuries to the eye
  • An eye disorder that is inflammatory
  • Advanced diabetes
  • Contraction or shrinkage of vitreous, the gel like substance that fills the eye, causing tugging on the retina

Signs and Symptoms of Retinal Detachment

Retinal detachment is a serious condition that must be treated as soon as it is detected. In most cases, it occurs after a posterior vitreous detachment. However, not all posterior vitreous detachments result in retinal detachment. Here are some of the common signs and symptoms that characterize this condition:

  • The presence of a curtain/veil that causes the loss of the field of vision. This barrier may come from any direction.
  • Flashes of light also known as photopsia – Retinal detachment patients experience sudden flashes of light that are uncomfortable. These flashes are very brief and are felt within the extreme peripheral part of vision.
  • An increase in floaters – These are specks or cobweb like substances that float on the eye’s field of vision. The increase may be sudden or gradual depending on the severity of the retinal detachment.
  • The presence of a ring of floaters on the skull (temporal) side of the central vision.
  • A mild feeling of heaviness in the eye
  • The presence of a dense shadow in the outer vision that progresses to the central vision over time.
  • Appearance of curves in otherwise straight lines. This is also referred to as a positive Amsler test.
  • Central vision loss.

When you experience any of these symptoms especially floaters and the sudden flashes of light, consider consulting a doctor immediately.

Retinal Detachment Risk Factors

Retinal detachment can be alleviated when warning signs are detected early and treatment is sought. This means, there is a great need to ensure that many people are educated about the signs so that they may seek treatment if by chance they experience any of the symptoms discussed above.

There are several risk factors associated with retinal detachment. Some of these include cataract surgery, retinal tears, myopia, family history, trauma and complications relating to cataract surgery.

  • Trauma: This is particularly common among those who are engaged in high speed or high impact sports. Thus, is it recommended that such activities like skydiving or diving be avoided altogether.
  • Myopia: People who have high levels of myopia are advised to stay clear of activities that have the potential of producing trauma, which thereby increases pressure in the eye. Such activities include bungee jumping, rapid deceleration or acceleration or roller coaster rides.
  • Family history:Retinal detachment may also be a result of your genetic composition where certain factors promote the photo receptor degeneration or local inflammation of the retina resulting in this condition.

Some diseases also predispose the eyes to the development of this condition. They include lattice degeneration of the retina, the use of certain eye drops and the presence of chronic inflammation of the eye, which is referred to as uveitis. In conclusion, retinal detachment is a serious medical condition that must be detected and treated early to avoid potential loss of vision.

Get in touch with InSight Vision Center if you see any symptoms of low vision.

Retinal Detachment

Our eyes are integral to our body, allowing us to view the world around us. Imagine being able to touch, smell, hear and feel everything but not see, like a car with dead headlamps driving down a highway. The dark isolation of vision loss can be quite horrifying!

This fantastic process happens when the optic nerve creates an image through the cornea and displays it on the retina (a light sensitive layer of tissue that acts like a screen). Retinal detachment, or RD, is a medical condition where the retina peels off from the surrounding tissue.

Types of Retinal Detachment

There are three types of retinal detachment:

  • Rhegmatogenous: The most common type, where the retina detaches from the Retina Pigment Epithelium (RPE) due to fluid getting under it after a retinal tear.
  • Tractional: A rare but serious type, where the cracked retina rips from the RPE due to the contracting scar tissue on its surface.
  • Exudative: This type occurs without holes, tears or breaks in the retina, and is caused by fluid leaking into the area under it (typically due to inflammation, injury or vascular abnormalities).

What Causes Retinal Detachment?

Here are some of the common risk factors for Retinal Detachment:

  • Extreme near-sightedness
  • Family history of Retinal Detachment
  • Previous retinal detachment in one eye
  • Stress and lifestyle factors like smoking
  • Retinal tears caused by injury to the eyes or head
  • Complications after an eye surgery, e.g. cataract surgery
  • Tumors, degenerative myopia, lattice degeneration, glaucoma and other eye disorders
  • Other diseases and medical conditions like diabetes, AIDS, sickle cell disease, etc.

Who’s at Risk?

RD caused due to injury or underlying medical conditions can happen at practically any age, but is more likely to occur after the age of 40. Almost half of all the people who have retinal tears are likely to end up with a detached retina, which puts sportspersons and athletes at high risk. Men are more prone to it than women, and research shows that Caucasians are at higher risk than African Americans.

Symptoms and Signs of Retinal Detachment

There is no pain associated with retinal tears, but at the initial stage, there are certain signs that can help with the detection of Retinal Detachment. These include:

  • Eyes becoming heavy and drowsy
  • Blurry or poor vision, a thin layer or ‘shadow’ hindering sight
  • A dark ‘curtain’ approaching the center of your vision from the side (peripheral vision).
  • Fish-eye vision for linear objects like roads, trees, buildings, etc.
  • Sudden flashes of light or ‘floaters’ in your vision

Treatment and Cure

RD is curable if the breaks in the retina can be closed or sealed again. An ophthalmologist can use fundus photography or ophthalmoscopy to diagnose it and conduct various surgical procedures for treatment. These include:

  • Scleral Buckling: Of the four types of retinal detachment surgery, this is the most
    popular one. Small bands of silicone or plastic are attached to the outside portion of the eye – the sclera. As a result of which the band compresses the eye inward which minimizes the traction of the retina, which eventually allows it to reattach itself to the inner wall of eye. The scleral buckle thus created attaches on the posterior quota of the eye but is invisible long after this surgery is completed. In some cases, the scleral buckling surgery may be performed in combination with other surgical procedures so as to fuse the retina with the retinal pigment epithelium, the underlying supportive tissue.
  • Pneumatic Retinopexy : In this surgical procedure, a small gas bubble is injected in
    the vitreous body – the gel like substance present between the lens and the retina. Because of this bubble, the vitreous rises and presses against the retina which effectively closes the tear. After this, a freezing probe of laser can be used to seal tears on the retina. This use of a freezing probe is termed as cyropexy and the usage
    of a laser beam is known as photocoagulation. However, the rate of success of this retinal detachment surgery is lower than the Scleral Buckling procedure.
  • Vitrectomy: This retinal detachment surgical procedure is fast becoming popular. In
    this treatment the clear jelly-like fluid from vitreous body which is the posterior
    chamber of the eye. Silicone oil is then used to replace this fluid to push the
    detached part of the retina into the correct position.
  • Laser Surgery: In this procedure, a laser beam is used to burn the area around the
    tear to create scarring on the retina’s underlying tissue.

In addition to the above procedures, Cryotherapy or laser photocoagulation may be used to prevent the detachment from spreading.

In some cases the surgical reattachment of the retina may not be successful because of certain factors such as the extent, cause and area of detachment. Some complications which may develop during or after the surgery are as follows:

  • Increased tears on the retina
  • Bleeding in the eye
  • High pressure or swelling in the eye
  • Double vision
  • A rare possibility of infection in the eye
  • Bruising around the eye
  • Allergic reaction to the medication
  • Cloudiness in the lens of the eye

Can RD Be Prevented?

To prevent RD, be pro-active and tackle the initial stage symptoms. Schedule a regular eye checkup every year and consult your eye doctor if you suspect a retinal tear or rip. Also, wear protective goggles for sports, driving, working with chemicals, machines or tools, etc.

It Can Happen to Anyone!

There are some famous personalities who suffered from retinal detachment, including the 26 th American President Theodore Roosevelt, renowned basketball player Amar’e Stoudemire, noted publisher, journalist and politician Joseph Pulitzer, soccer star Pele and various others.

Vision loss caused by RD can be prevented or cured with early treatment, if the retinal tear is corrected before detachment occurs. RD is considered a medical emergency that can severely affect your eyesight or even lead to blindness if left untreated, so if you have the symptoms, get in touch with an experienced ophthalmologist or eye surgeon at the InSight Vision Center!

vision problems in kids

A healthy vision is essential for the development of every child. A weak vision or eye problems will affect a child’s learning ability and personality, in addition to affecting his/her school work. The next time you take your child for a health check-up, make sure you include eye tests too.

Eye Specialists to Visit

Make an appointment with either of the following, depending on the vision test and care required:

  • Ophthalmologist: They treat eye problems and are qualified to perform eye surgeries.
  • Optometrist: Similar to ophthalmologists, except that they do not perform surgery.
  • Optician: They can give routine eye-exams to test vision and can fit/adjust eyeglasses to rectify vision problems.

Uncommon Warning Signs

Not all vision problems start with blurry vision or inability to see things clearly. Some symptoms can go unnoticed, such as:

  • Wandering or crossed eye: It affects 3-5% of children. Its symptoms include an eye that drifts or appears crossed in respect to the other eye.
  • Uneven focus: It occurs when one eye is more farsighted than the other. This affects 2-3% of kids. Detecting this problem can be tricky as younger children may not realize that their vision is compromised.

These problems occur in kids between the ages of 18 months and 4 years.

Vision Screening and Treatment

Doctors recommend that the first full vision screening should be done by the age of 3. Follow it with an in-depth examination to detect the underlying problem. The treatment for most eye problems is done with eye-drops, eye patches, glasses or special lenses. Surgery might be recommended if the patches, drops or lenses don’t work to correct the problem.

Detecting Eye and Vision Problems in Children

Vision problems can be detected through the following warning signs:

  • Eye rubbing and redness of eye
  • Tearing and swelling
  • Droopy eyelids
  • Pus or crust
  • White, yellow, or gray-white material in the pupil
  • Sensitivity to light
  • Rush to an eye doctor the moment you see these symptoms.

Common Eye Problems in Children

Amblyopia: Also known as ‘lazy eye’, amblyopia is poor vision in an eye that appears to be normal. Crossed eyes and different refractive error between both eyes cause amblyopia. It should ideally be treated before the age of 8, after which it can cause irreversible visual loss in the affected eye.

Strabismus: This is caused due a misalignment of the eyes, i.e., when they may turn in, out, up or down. A chronically misaligned may also lead to amblyopia. If detected early, the vision can be restored by patching the properly aligned eye, forcing the misaligned eye to work. It can be corrected through surgery or specially designed glasses too.

Refractive errors: When the shape of the eye doesn’t refract the light properly, images will appear blurred. Refractive errors can also cause amblyopia. Common refractive errors include:

  • Nearsightedness: Also called myopia, nearsightedness is poor distance vision when you can’t see things that are at a distance.
  • Farsightedness: When you have trouble seeing close objects, it’s called farsightedness or hyperopia.
  • Astigmatism: This causes an imperfect curvature of the front surface of the eye, which makes the objects appear either ‘stretched’ or ‘shrunk’.

All refractive errors can be treated with eye-glasses, contact lenses or surgery.

Depending on the severity of the condition, vision treatments like patching may last for couple of weeks, months to about a year. Use of glasses or contact lenses may be more permanent. Get your child’s vision tested today to assure healthy eyes. Do not ignore the warning signs or delay the treatment as it can cause permanent vision loss in the affected eye.

InSight Vision Center offers precise treatments for all types of eye problems. Schedule a consultation today and know the best treatment options for your child.

PRK vs Lasik

In recent times, people have become more comfortable with corrective eye surgeries for treating vision problems caused by near-sightedness, far-sightedness or astigmatism, due to increased safety and enhanced technology. Two of the most popular surgeries include PRK and LASIK.

PRK, abbreviated for Photorefractive Keratectomy, is a type of surface ablation employed for eye surgery. Computer-controlled laser is used directly over the corneal surface after removing a part of it, which is then allowed to grow back the next few days; whereas in LASIK, the surgery is performed under a thin flap of cornea which is placed back after the procedure. Though both procedures have their own pros and cons, they give excellent results in the end. Read on to know more.

PRK vs. LASIK

The main difference between these two surgeries is based on how surgeons deal with the corneal surface. In PRK, eye surgeon removes the outer layer of cornea and performs vision-correction surgery directly on corneal surface. The exposed area is then allowed to reshape through cell regeneration. It makes a better choice for people with thin corneas or chronically dry eyes.

In LASIK surgery, an incision is made (either with laser or blade) in the cornea to create a flap of tissue. This flap is then lifted and computer-controlled surgical laser is used to reshape inner layers of cornea to repair curvature imperfections causing poor vision. Corneal flap is then put back in place which heals over the reshaped part of the cornea.

PRK is Better Than LASIK in Patients Over 40

Surface cells of eyes of people over 40 are not tightly bound. This can cause the flap to slip during LASIK which can lead to serious complications. With PRK, those risks are eliminated by the absence of flap, making it suitable for elders. Moreover, patients over 40 have slightly dry eyes which get aggravated if LASIK is performed over them.

Candidates for PRK and Lasik

Every patient who is a good candidate for LASIK can opt for PRK, but vice versa does not hold true. PRK is advised for patients with:

  • Thin corneas
  • Large pupils
  • Irregular astigmatism
  • Steep corneas
  • Prior eye surgery
  • History of dry eye syndrome

Additionally, people with high-risk occupations, sportspeople and athletes prefer PRK over LASIK to eliminate the risk of corneal flap displacement. Thorough checkup by a qualified eye surgeon is a must before you proceed with either surgery.

PRK Recovery vs. LASIK Recovery

Though both surgeries give almost the same results, their recovery times differ significantly. PRK recovery takes a little longer than LASIK since the outer corneal layer needs time to reconstruct and heal. Cell generation will result in itchiness, blurriness and discomfort for a few days post surgery. Prescription eye-drops are given to patients to promote healing and reduce discomfort.

In LASIK, the flap is placed back over the cornea when procedure ends, thus drastically cutting down recovery time. The itchiness lasts just a few hours. However, for both surgeries the vision continues to improve gradually for several months before reaching peak quality.

PRK vs. LASIK- What’s the Difference?

Let’s take a look at the differences between PRK and LASIK surgery:

Difference PRK LASIK
Type Laser-based corrective vision
surgery so as to help the
patient reduce dependency on
glasses or contact lenses.		 Laser-based corrective vision
surgery so as to help the
patient reduce dependency on
contact lenses or glasses
Treatment for Preferred for people who have
a thin cornea, Myopia or
Nearsightedness, Hyperopia or
Farsightedness, Astigmatism		 Nearsightedness or Myopia,
Farsightedness or Hyperopia,
Astigmatism
Eligible Age 21-40 21-40
Pros Decreased depth of laser
treatment, no complications regarding corneal flap, corneal
thickness regulated		 Speedy recovery, decreased
risk of post-surgery infection, lower post-operative
discomfort, peak vision
achieved quickly as compared
to PRK, both eyes can be done
at the same time
Cons Recovery slower as compared
to LASIK, increased risk of post-
operative complications,
greater post-operative
discomfort, patients sometimes
have to wait for up to one to
two weeks before operating
the second eye		 Possible complications from
corneal flap, increased depth of
laser
Potential Side Effects Dry eyes, infection, night
blindness – halos around lights,
light sensitivity during night
time		 Night blindness – halos around
lights, dry eyes, infection,
dislodged corneal flap, light
sensitivity during night time
Cons Recovery slower as compared
to LASIK, increased risk of post-
operative complications,
greater post-operative
discomfort, patients sometimes
have to wait for up to one to
two weeks before operating
the second eye		 Possible complications from
corneal flap, increased depth of
laser
Criteria No history of dry eyes, no eye
injuries or infections within a
year, stable prescription for
minimum one year		 Normal depth cornea, no
history of dry eyes, stable
prescription for at least one
year and no injuries or
infections within a year
Healing and Recovery Takes up to six months before
peak accuracy is achieved and
clarity in vision is reached.
Requires around one to three
days for blurring and
discomfort to subside		 Vision improved immediately,
blurring and discomfort gone
within 24 hours
Outcome 20/20 vision or better 20/20 vision or better

 

PRK vs LASIK

What is Right for you

The best way to getting rid of your glasses and contacts is to visit a few of your local area eye doctors for a consultation and see if you are eligible for either or both procedures. It is possible that you may be a candidate for only one or both surgical procedures; these doctors will give you their professional opinions, options, and recommendations. It is advised that you visit a couple of eye doctors in your area and their professional opinions on what to do regarding your eyes after which you can draw up your own conclusion.

To learn more about the best laser corrective procedure for you, contact our professionals at Insight Vision Center in Fresno today! To schedule a consultation, call on 559-449-5050.

Color Blindness

Color vision deficiency, or color blindness, is the inability to distinguish certain shades of colors. In highly severe cases, people can’t see the concerned colors at all though very few people are completely color blind (who can see things only as black, white and shades of gray). Color blindness occurs when there is a damage or loss of ‘cones’, which are the photoreceptors in the retina making color vision possible. If the cones lack one or more light sensitive pigments, there will be a deficiency in the color perception, making it difficult to see one or more of the three primary colors.

Types of Color Vision Deficiencies

  • The Red-Green Color Deficiencies
    The most common color vision deficiency, this affects more men than women. People have difficulty in distinguishing between different shades of red, green and yellow. Either they all appear to be a similar color, appear dull or can only be distinguished by slightly different brightness and intensity. They may even confuse red with black. Shades of purple will appear blue as you won’t be able to see the red component in them.
  • Deuteranopia And Deuteranomaly
    This occurs when there is a loss of M-cones. It’s a less severe form of red-green color vision deficiency where you’ll have trouble differentiating between different shades of the same color in the red-yellow-green spectrum.
  • Protanopia And Protanomaly
    Loss of L-cones leads to protanopia. You’ll confuse colors in the red-yellow-green spectrum if you suffer from this deficiency. Protanomaly is a less severe form where you won’t be able to distinguish different shades of the same color in the red-yellow-green spectrum. Those suffering from either disease are likely to see red colors as darker than normal.
  • Blue-yellow color vision deficiency
    This deficiency is quite rare and is caused due to a deficiency of S-cones. It’s also known as Tritanomaly or Tritanopia. With this deficiency you will have difficulty distinguishing between blue and green, with green appearing as a shade of blue. Some even see yellow as a pale shade of grey or purple.

color deficiency test

Symptoms and Signs to Look Out For

Common symptoms to identify color blindness include:

  • Inability to distinguish between colors
  • Difficulty in differentiating or seeing tones and shades of the same color
  • Rapid eye movement in very rare cases

Causes of Color Vision Deficiency

Most cases of color deficiency are genetic and are passed from the parents to kids. Apart from that, certain diseases and medical conditions may also lead to a loss in color recognition. Some include:

  • Diabetes
  • Glaucoma
  • Macular degeneration
  • Alzheimer’s disease
  • Leukemia
  • Sickle cell anemia

Other factors also include:

Medication: Drugs used for treating nervous disorders, heart problems, high blood pressure and psychological problems can affect color vision.

Chemical Exposure: Prolonged exposure to some fertilizers and chemicals has caused loss of color vision in some individuals.

Aging: As a person ages, his/her ability to see and recognize colors diminishes.

Treating Color Blindness

In most cases there is no cure, but if it’s caused due to an illness or an eye-injury, treatment may improve the color vision. Color cues and other methods can help color-deficient people to compensate for their inability to distinguish colors.

  • Organizing and labeling your furniture, clothes and other colored objects will help in easy recognition.
  • Some objects such as traffic signals have a fixed order of colors. Remembering such order of things rather than focusing on the color will help in identifying colors correctly.

If you suspect colorblindness in yourself or a loved one, go to an eye doctor immediately. Give InSight Vision Center a call and make an appointment today for a comprehensive diagnosis.

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