Category

Astigmatism

What Causes Astigmatism to Worsen

Astigmatism refers to the term in which your cornea or lens isn’t round in shape. It’s a common vision disorder, and its symptoms include blurred vision, difficulty with driving at night, headaches, eye pain, and glare sensitivity. Astigmatism usually develops in childhood and changes our eye shape into a football-like shape from its usual spherical form.

This unusual shape causes light rays to bend in more than one direction, which causes blurred vision. Astigmatism usually doesn’t require any surgeries, and in most cases, you can treat it with glasses or contact lenses but if left untreated several factors can cause Astigmatism to worsen. Continue reading What Causes Astigmatism to Worsen?

contact lenses for astigmatism

Astigmatism is a disorder of the eye where the irregularly shaped cornea causes blurred vision, discomfort, and headaches. Most people have some degree of astigmatism. Astigmatism often co-exists with myopia (nearsightedness), and hyperopia (farsightedness).

Usually, the surface of the cornea is round, like a basketball. For people with astigmatism, the surface is shaped like a football, and the eye is not able to focus light rays to a single point.

Astigmatism can be easily corrected with eyeglasses or contact lenses. Contact lenses provide a clearer, and a wider field of vision, and provide greater comfort than glasses.

The type of contact lens you have depends on the type of astigmatism you have. Your ophthalmologist will be able to prescribe the right type of contacts for your condition. The contact lens for you could be one of the following:

Types of Contact Lens for Astigmatism

  1. Toric Contact Lenses – Toric contact lenses are specially designed to correct moderate amounts of astigmatism. These are made of either a hydrogel material or a highly breathable silicone hydrogel. The word Toric comes from the geometric shape ‘torus.’ A torus looks like a donut, and Toric lenses are shaped like a slice of a donut so they align with the irregularly shaped cornea to give the wearer proper vision. Toric contact lenses need to be prescribed by the doctor who can choose contact lenses that are right for your vision and customize them accordingly.
  2. Gas Permeable Contact Lenses – Gas permeable contact lenses can correct astigmatism without being shaped like a Toric. These contacts for astigmatism are rigid and retain their spherical shape instead of molding to the irregular shape of the cornea. This uniform curve of the gas permeable contact lens replaces the irregularly shaped cornea as the primary refracting surface of the eye. It takes more time fitting gas permeable contact lenses as compared to fitting soft contact lenses and costs more than getting fitted with Toric lenses. Almost 75% of the astigmatic participants said that their vision was better with gas permeable contact lenses. Out of the test subjects, only 10% had worn their gas permeable contact lenses prior to the study, and 60% ended up wearing these gas permeable lenses after the study.
  3. Hybrid Contact Lenses – Hybrid contact lenses are great for most patients with corneal astigmatism. Hybrid contact lenses combine the best of both worlds — the center is made of a rigid gas permeable material, and the surrounding zone is made of a hydrogel or a silicone hydrogel like in Toric lenses. This helps the wearer provide the comfort of Toric lenses and the accuracy of vision of gas permeable contacts for astigmatism. Since these are more customized contacts for astigmatism, they need more time and expertise in fitting. But since these lenses are custom-made for the wearer, they’re more sturdy and better to wear for sports.

Most people with mild astigmatism (up to 0.50D) can wear soft, disposable contact lenses that don’t have any correction for astigmatism. You can still achieve 20-20 vision with a small amount of uncorrected astigmatism.

The experienced team at the InSight Vision Center will help you get the best contact lens, no matter what your level of astigmatism is. Make an appointment now.

Vision with Astigmatism

It’s not every day that you see people talking about interesting facts about eyesight. But how much do you know about your eye health? There are some who are blessed with perfect 20/20 vision, while others are completely blind.

But what about people with certain eye conditions? How can you tell if you have poor vision at all? Twitter’s recent post has spread like wildfire and fuelled responses from around the world. It’s making people question their eyesight. The below tweet shows what vision with astigmatism looks like versus vision without astigmatism.

This post intends to do some detailed analysis of the facts this tweet wants to communicate and, along the way, spread awareness about how people with astigmatism see!

Astigmatism vs Normal – How people with Astigmatism see?

In the first image, the light from the brake lights and traffic signs appear distorted, stretching into a wide, starburst shape. This exactly indicates what astigmatism vision looks like. In the second image, the lights coming off of the traffic light appear softer and have a halo shape, which represents clear vision.

This tweet has gathered over 80,000 reactions and has convinced many people that they have vision with astigmatism. Most of the people who reacted thought the image on the left was a representation of perfect vision, and the results have shocked them. Some people with glasses thought the distorted vision was actually a normal condition.

Astigmatism Lights at Night

Due to Astigmatism the misshapen cornea or lens doesn’t allow proper light intake in your eyes. The lights get scattered instead of focusing on your retina. Therefore if you have astigmatism, you need to squint your eyes more. You may also find yourself reducing the glares of the things in front of you whenever possible.

And the interesting part is that people born with astigmatism may never know this difference until someone points that out to them. Therefore the Twitter post caught the attention of so many people with astigmatism who thought what they see is normal.
But if you are amongst those who developed astigmatism over time, you will gradually, if not instantly, know that something is wrong with your vision. It’s easy to spot the difference between astigmatism visions vs. normal vision. Astigmatism lights notoriously appear hazy with holes, glares, and streaks.

Driving at Night With Astigmatism

By now, you may understand what astigmatism vision looks like at night if the processing of lights is so distorted normally. Yes, astigmatism gets pretty worse at night. Specifically, it’s scary to drive at night with astigmatism.

Unlike daytime, there is more darkness all-around at night. So naturally, your pupils dilate to allow more light inside the eye. But with astigmatism, more light means more glare. The street lights and headlights of other vehicles help people with normal vision navigate the roads at night. But these lights become a hurdle if you have astigmatism vision.

Now you know the different effects of astigmatism at night vs. normal daytime. It’s much worse and more confusing during the night. In the next section, let’s deep dive into the solution for people driving with astigmatism at night. Keep reading if you are one of them!

Tips for Safely Driving at Night With Astigmatism

Apart from eye exercises for astigmatism treatment, your eye doctor will agree that the following tips help combat astigmatism lights at night while driving.

  • Get Your Vision Corrected

Getting your vision corrected is essential since most critical decisions made by drivers are based on sight. Many drivers aren’t aware of the relationship between good vision and good driving, especially if you drive at night.

There are two vision correction options to make life easy for you. The first one is glasses. It’s a proven solution for astigmatism at night. Otherwise, you can get toric lenses. However, you may need some time to get used to them. Figure out what works best for you with the help of your eye doctor.

  • Wear Anti-Reflector Glasses

If you choose good old glasses for astigmatism at night, get anti-reflector ones. They are much less likely to intensify glare than other corrective lenses. They can also help cut down on poor vision in low light, helping you drive at night.

If you already wear glasses and think you are comfortable in them, try the anti-reflectors glasses and know the difference.

  • Use Contact Moisturizing Drops

Having to deal with painful, irritated eyes while driving can be not only annoying but also dangerous. Toric lenses for astigmatism often result in dry eyes. Driving at night can also result in a glare that reflects off the dry, irregular surface of the cornea.

If you wear contact lenses to correct astigmatism, use contact moisturizing drops to prevent drying your toric lenses.

  • Get a LASIK Eye Surgery

LASIK eye surgery refers to laser eye surgery and vision correction. It’s considered the permanent solution to the everyday annoyances of dealing with corrective lenses when you have astigmatism.

With a quick recovery rate, LASIK eye surgery can save you money on the annual costs of glasses and contact lenses. And more importantly, it will help you with a better vision to allow you to drive safely.

Parting Words

Driving at night with astigmatism is a severe life hazard. Therefore, you must not only do your own vision analysis. You also must show these pictures to your family members and loved ones to check which image they identify with.

The issue of astigmatism lights can easily be resolved with solutions like glasses, toric lenses, and LASIK eye surgery. Also, an eye exam is important not just to correct astigmatism vision but it is to safeguard your overall health and wellness.

Don’t put it off for any longer. A doctor of optometry can diagnose astigmatism. Schedule an appointment in Fresno, CA with an experienced optometrist to correct your vision.

Image Source: Unusual Facts

Eye vitamins

Most people with astigmatism are born this way. It’s a natural condition. In rare cases, astigmatism can result from eye injury or surgery. Astigmatism stems from a bend in the cornea in a way which distorts light.

Almost everyone has some degree of astigmatism because their vision is not perfect. Symptoms include blurry vision, headaches, squinting, and poor night vision. The most common symptom of astigmatism is blurred or double-vision. Children often don’t recognize these symptoms because they don’t really know that they have an eye condition. Early astigmatism treatment can significantly reduce distorted vision and other associated problems.

Eye doctors can quickly and easily confirm astigmatism with a vision test. If a doctor finds blurred vision at all distances, they know it is astigmatism. Tests done to measure the cornea for contacts can also find problem areas.

Astigmatism often comes with other vision problems. Blurry vision up close or far away can mean near or farsightedness. Often prescriptions for eyeglasses will include distance and astigmatism both. But treatment for astigmatism also includes eye vitamins. What you eat has a huge impact on your eye health and overall well-being. Eating right is the key to correcting minor vision problems.

 

Here Are Some Important Eye Vitamins That Help to Control Astigmatism:

 

1. Vitamin A
Vitamin A is excellent for good eye health. Natural sources of vitamin A include dark leafy vegetables like spinach and kale, carrots, and winter squash. Including these vegetables in your regular diet will ensure you’re getting all the vitamins you need for good vision. If you don’t particularly like the taste of spinach and kale, add them to your smoothies! Carrots, added to other vegetables like cabbage and tomatoes make an excellent choice for soups.

2. Vitamin B
Vitamin B will encourage good vision. Fish like salmon, trout, and catfish are also an excellent source of Vitamin B. Eggs, dairy, poultry, beef, and lamb also make a good addition to your meals. Vegans and vegetarians too can get their source of protein through avocados.

3. Vitamin C
Does your diet include enough citrus foods? Vitamin C is essential for your overall health and also encourages good vision. While supplements are easily available, it’s best that you eat natural foods that contain Vitamin C. Oranges, lemons, dark leafy vegetables, strawberries, and peppers are all rich in Vitamin C.

If natural foods do not suffice, your doctor will recommend other methods to treat astigmatism to regain your distorted vision after conducting a test.

 

Here Are 2 Astigmatism Correction Methods:

1. Eyeglasses or Contact Lenses
The most common way to treat astigmatism is by recommending corrective lenses. Your doctor will prescribe a particular pair of soft lenses called toric. These contact lenses help to bend more light in a specific direction than the other. In more severe cases, you may require a gas-permeable rigid contact lens. Astigmatism treatment also includes the use of eyeglasses to treat vision problems.

2. Early Intervention
Remember that both children and adults are susceptible to the symptoms of astigmatism. And it’s important that you and your little one visit the doctor’s office for an annual eye exam to determine potential eye conditions. A delay in astigmatism correction can lead to frequent headaches, lethargy, and fatigue. For kids, it can also hinder their learning ability at school. Kids who are passionate about co-curricular activities may also lose out on great opportunities if they have poor vision. Adults, on the other hand, may not be able to sit in front of the screen for long hours.

If you or a family member is facing vision problems to a certain degree, it’s important that you seek treatment immediately. Book an appointment with Insight Vision Centre today for comprehensive eye care.

facts about astigmatism

Most people have some degree of astigmatism and yet there are so many people who are still confused and may miss out on signs of astigmatism. Here are some common facts about astigmatism and the symptoms you should look out for and the steps you can take to treat them.

Facts about Astigmatism:

  1. Irregularly-shaped Cornea
    Astigmatism is caused by an irregularly-shaped cornea which makes it look more like a football than a normal spherical-shape structure. A cornea with a rounder shape controls the amount of light that enters, allowing you to see things around you clearly. An irregularly-shaped cornea prevents an even distribution of light, resulting in blurred vision.
  2. Genetic Component
    An irregularly-shaped cornea is a genetic trait, just like the color of your eyes that may have passed from one generation to the next. So, if you start experiencing blurry vision over time, it may be unquestionably out of your control.
  3. Untreated Astigmatism
    Astigmatism symptoms should be caught early, especially in children. If overlooked, it can result in more serious and permanent conditions like amblyopia, commonly known lazy eye. Regular eye exams should be an essential part of your child’s growing years to avoid further complications.
  4. Astigmatism affects Depth Perception
    The ability to see in three dimensions and judge the distance of an object is called depth perception. Eye conditions like astigmatism make depth perception issues more prominent. This makes it difficult to determine the proximity of certain objects or the distance between two objects. Astigmatism blurs the edges and outlines of things you see. So even if your depth perception is not affected, the overall quality of your vision may be poor nonetheless.
  5. More than One Category of Astigmatism
    Astigmatism has more than one category. An irregular-shaped cornea is called corneal astigmatism. While the shape of the lens being distorted is known as lenticular astigmatism. Both result in distorted vision when looking at objects near and far.
  6. LASIK surgery
    Lasik surgery can permanently reshape the cornea, guiding it to a rounder shape that helps you see clearly. Expect a sharper than ever vision without having to deal with corrective lenses.
  7. High Blood Sugar Levels
    High blood sugar levels can affect the shape of the lens that is responsible for the focusing power of the eye. Eye problems are collectively referred to as diabetic eye disease. It commonly includes diabetic retinopathy, where the tiny blood vessels in the retina are damaged, but may also include cataracts and glaucoma.
  8. Vigorous rubbing of the eyes
    Constantly rubbing your eyes can cause damage to the cornea and eventually result in increased pressure and irregular change in the shape of the eye.
  9. Degrees of Severity
    A person with mild astigmatism has < 1.00 dioptre, a person with moderate astigmatism has 1.00 to 2.00 dioptres, a person with severe astigmatism has 2.00 to 3.00 dioptres and a person with extreme astigmatism has > 3.00 dioptres. People with astigmatism may suffer from headaches, tired eyes and experience sensitivity to bright lights. At times, near-sighted people may squint to improve their vision.

If you’re looking for an experienced Ophthalmologist in Fresno, book an appointment with us today and allow our helpful clinical staff at Insight Vision Centre to bring back those healthy eyes.

astigmatism-vision

What Is Astigmatism?

Astigmatism is a common eye problem, where the eyeball isn’t perfectly round. It may be slightly football-shaped or look like the back of a spoon instead, which can cause blurred vision. Light entering a normal eye is bent evenly for clear vision, but an irregularly shaped cornea or lens can cause it to bend more in one direction. Since light doesn’t focus on the retina properly, objects may seem blurry, wavy or out of focus, especially at a distance.

Astigmatism Symptoms

Astigmatism causes distorted or blurred vision to some level at all distances. The person will experience astigmatism symptoms such as eyestrain, difficulty in viewing at night due to astigmatism lights and headaches especially after reading or doing any visual task for an extended period. Squinting is another symptom that is commonly seen in people with Astigmatism.

What Causes Astigmatism and How Is It Diagnosed?

Astigmatism takes place when the surface of the cornea or the inner curve of the eye lens is shaped irregularly or changes over time. This often happens during adulthood, but the exact cause is unknown.

The condition can be inherited and is usually present right from birth. Astigmatism may increase or decrease as you age, occur after eye surgery, disease or injury, and even be followed by the development of cataracts. It may also be caused by keratoconus, a condition where the cornea thins and becomes cone-shaped over time.

A comprehensive eye exam is the only way to diagnose astigmatism, but look out for symptoms such as blurriness, difficulty reading or changes in vision. Refractive eye errors such as nearsightedness/farsightedness can also occur along with astigmatism, and your eye doctor can conduct a variety of tests to find the problem.

Types of Astigmatism

There are 3 types of Astigmatism:

  1. Myopic Astigmatism– One or both central meridians of the eye are nearsighted. If both the meridians are nearsighted, they are myopic in varying degrees.
  2. Hyperopic Astigmatism– One or both central meridians are far-sighted.
  3. Mixed Astigmatism– One central meridian is nearsighted and the other is farsighted.

Astigmatism can also be categorized as regular and irregular. Regular Astigmatism is when the central meridians are 90 degrees away (vertical to each other). In irregular astigmatism, the central meridians are not vertical to each other. Most people with astigmatism have corneal astigmatism, which gives the anterior surface of the eye an oval shape. Irregular astigmatism is either the result of an eye injury that has scarred the cornea or keratoconus, a disease that causes a gradual tapering of the cornea or the aftermath of eye surgery.

Is Eye Surgery Necessary for Treating Astigmatism?

Depending on the degree of astigmatism and your eye health, your optometrist could suggest various options for vision correction. Surgery isn’t always necessary, but it can help you regain clear vision if you have severe astigmatism. If you have slight astigmatism with no vision issues, eye exercises for astigmatism treatment might turn out to be highly beneficial.

Let’s look at the common options for astigmatism treatment:

  1. Corrective Lenses

    Eyeglasses and contact lenses can correct vision problems caused by moderate cases of the condition. Single-vision glasses with a cylindrical lens provide additional power in specific parts of the lens for clear vision at all distances, but bifocal or progressive addition lenses may be prescribed if you’re over 40. Your eye doctor may prescribe special soft contact lenses that bend light in the correct direction, but you may need gas-permeable rigid contact lenses if you have severe astigmatism. However, both glasses and lenses can be uncomfortable and inconvenient for many people, and neither can correct astigmatism completely.

  2. LASIK Surgery

    LASIK or laser in situ keratomileusis is a form of laser eye surgery conducted to remove the underlying flap of the cornea. It corrects vision by refracting or bending light entering the eye, and is often preferred over other refractive surgeries since it only removes tissue from the inner layer of the cornea. In the past, LASIK was considered ineffective for correcting astigmatism completely. With modern advances in technology and eye surgery methods, however, this laser-guided treatment can treat astigmatism as well as other vision problems such as nearsightedness and farsightedness, eliminating the need for glasses or contacts.

  3. Other Options

    Astigmatism may also be treated with orthokeratology, or ortho-k, where a series of rigid contact lenses are fitted over the eye to reshape the cornea. You need to wear these retainer lenses for a specified period of time, usually overnight, before removing them. Ortho-k can improve vision in moderate cases, but only if you continue wearing the lenses. If you stop wearing them, your vision can return to its original condition. Other options include photorefractive keratectomy or PRK, a form of eye surgery where tissue is removed from the cornea’s superficial and inner layers.

Today, LASIK is one of the most popular choices for permanent and practically painless vision correction. Of course, the right treatment choice depends upon the degree of astigmatism, health of your retina and cornea, as well as your lifestyle and vision needs. Your eye doctor can help you choose what’s right.

To learn more about astigmatism treatment or to book an appointment for LASIK in Fresno, contact Insight Vision Center today!

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