Eye Astigmatism Contact Lenses

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Eye Astigmatism Contact Lenses – Astigmatism is an imperfection in the curvature of the cornea of ​​your eye. This interferes with your eye’s ability to focus light on the retina, causing blurred and distorted vision. Fortunately, astigmatism is mild and can be easily corrected with toric contact lenses.

While a normal eye refracts light equally along all of the eye’s “meridians” (imaginary lines across the surface of the eye), an eye with astigmatism means that light refracts more in one meridian than another, distorting light and focus. point reached

Eye Astigmatism Contact Lenses

Eye Astigmatism Contact Lenses

The image below shows the differences between a normal eye and an eye with astigmatism. As in the picture, an astigmatic cornea does not refract light rays properly, resulting in distorted foci in front and/or behind the retina.

Managing The Astigmatic Patient With Contact Lenses

As a result, the vision becomes blurred and foggy, which can also cause general discomfort. If left untreated with toric contact lenses or glasses, astigmatism can cause headaches and eye pain.

With normal astigmatism, the cornea of ​​your eye is curved more in one direction than the other. The main meridians of your eye are 90 degrees apart, perpendicular to each other.

However, irregular astigmatism occurs when the curvature is not across the surface of the eye. It can turn in several directions or steeper down.

The two main meridians in your eye, the vertical and the horizontal, can have different effects on the way you see with astigmatism.

Contact Lens Spectrum

When the vertical meridian is steeper, your vision will be blurry when you look at the vertical lines. This is called straight astigmatism.

However, if your horizontal meridian is damaged (known as transverse astigmatism), your eyes will not be able to focus on horizontal lines, resulting in blurred vision.

High astigmatism refers to the prescription numbers of your contact lenses or glasses. In general, the higher the number of axes and cylinders in your prescription, the stronger your astigmatism.

Eye Astigmatism Contact Lenses

Depending on the severity of a person’s astigmatism, they may see light differently. Astigmatism means your cornea is shaped like a rugby ball, which means light bends in different directions and can appear distorted.

Common Causes For Contact Lens Discomfort

The image below shows how someone with astigmatism can see backlighting at night compared to someone without astigmatism. Try our vision simulator to see the world through the eyes of an astigmatism sufferer.

Some people may have astigmatism but experience none of these symptoms. However, it is important to have your eyes checked regularly to avoid unnecessary stress. And if you experience any of these symptoms, you should visit an optician or doctor to see if it could be the cause of astigmatism.

Astigmatism is worse at night or in low-light conditions because your eyes dilate to demand more light, increasing glare, halos, blurred and distorted vision. Therefore, it is important to check with an eye doctor if it is safe to drive at night, as headlights and taillights can appear dim.

If your astigmatism gets worse over time, it will happen whether you wear corrective contact lenses or glasses. There is no solid evidence to prove that myths such as reading in the dark, rubbing your eyes, or being too close to the TV make astigmatism worse. However, the symptoms of astigmatism, including headaches, fatigue, and eye strain, can worsen if left untreated.

A New Contact Lens Innovation To Address Presbyopic Astigmats’ Needs

In most cases of astigmatism, a person is born with an irregularly shaped cornea or lens, and the shape of the eye often resembles a rugby ball rather than the usual football shape.

However, there have also been cases where astigmatism developed or worsened later in life. The reason for this is not clear to scientists; however, they believe it was due to genetic factors. If someone in your family has astigmatism, you are much more likely to have it later in life.

Astigmatism is a common eye disease that is easily diagnosed by an optician. This test is done using different methods to measure how the eye focuses light.

Eye Astigmatism Contact Lenses

First, your visual acuity will be measured using a letter chart to determine your visual acuity.

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Your eye’s ability to focus will then be measured with a series of lenses placed in front of them. The lenses that will give you the best vision will be your prescribed contact lenses/glasses.

Finally, a keratometer is used to measure the curvature of the cornea, and if necessary, corneal topography can be used to perform a more thorough examination of the surface of the eye.

However, before that, you can do your own astigmatism eye test at home using this helpful image below.

Aside from refractive surgery, which can be very expensive, toric contact lenses are often the most convenient and effective option for correcting astigmatism. They differ from regular contact lenses in that they are torus-shaped rather than spherical, more like a circular donut slice than a football-shaped slice. This allows your eyes to tilt and adjust to help focus light effectively, resulting in clearer, undistorted vision.

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Another difference between toric contact lenses and regular lenses is that toric lenses have different powers in different meridians (invisible lines across the diameter) to correct different degrees of nearsightedness (nearsightedness) and/or farsightedness (farsightedness). Most other contact lenses have power through the lens. In addition, the toric contacts have a design that allows them to rotate in such a position that the power meridians are aligned with the meridians of the eyes that require visual correction.

Toric contact lenses are usually soft contact lenses; however, toric versions of solid gas permeable lenses can only be used to correct irregular astigmatism. There is also a wide range of toric lenses on the market, meaning you can find lenses to suit your needs, from daily disposables, bi-weekly contact lenses, monthly lenses and soon colored lenses.

Both glasses and toric contact lenses are effective in correcting astigmatism, but contact lenses are generally preferred. This is because they support the shape of your eye and are considered more comfortable to wear over glasses.

Eye Astigmatism Contact Lenses

Although this is not always the case, the severity of astigmatism can increase with age. Very often direct astigmatism becomes indirect astigmatism later in life. As our eyelids become looser with age, the pressure that the eyelids normally exert on the cornea decreases, resulting in a decrease in the slope of the vertical curve of the meridian. At the same time, the severity of the horizontal meridian curve increases, resulting in a transition from direct to indirect astigmatism, which can gradually worsen.

Coloured Contact Lenses For Astigmatism

Unfortunately, astigmatism cannot simply disappear. Sometimes direct astigmatism can decrease, and often it can go the other way and cause indirect astigmatism. However, as mentioned above, astigmatism can be corrected with toric contact lenses or a permanent solution can be chosen with refractive eye surgery.

You may have a mild case of astigmatism and not know it because it has little effect on your vision. However, it can cause headaches, poor night vision, eye pain and possibly blurred vision. Therefore, if any of these symptoms occur frequently, visit your optician. If you have astigmatism and want to adjust with contact lenses, your eye doctor can prescribe toric contact lenses.

Astigmatism is a common vision problem that causes images to become blurred, shadowed, or doubled when glasses or contact lenses are not worn. It falls into the same category as nearsightedness and farsightedness, but causes blurred vision both near and far.

In the video below, Dr. Jackie Garlich discusses the different types of astigmatism contacts and the benefits of each.

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Toric contact lenses are specially designed lenses that combine more than one power in a single contact. In addition, they are designed with a stabilization mechanism that prevents the lens from rotating while you are wearing it.

Soft toric contact lenses are most commonly prescribed due to their good initial comfort, wide availability and convenience. These lenses are available in daily, biweekly and monthly disposable forms.

When it comes to correcting astigmatism with soft contact lenses, it’s more than just writing a prescription. Although your eye doctor can use your eyeglass prescription as a starting point, he will need to carefully examine the contact lens in your eye for small laser markings that indicate whether the lens is properly aligned.

Eye Astigmatism Contact Lenses

Also note that these lenses may take time to provide clear and comfortable vision.

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Fortunately, it’s good to know that the shape of these lenses is specifically designed to rotate independently. However, these lenses need to fit properly for you to have good vision. So don’t be embarrassed if your first pair feels a little tight. Your eye doctor may just need to adjust.

Hard and hybrid toric contact lenses are an excellent alternative to soft toric contact lenses in some situations. For example, if you have a high degree of astigmatism, the subtle movements you make with a soft contact lens can cause blurring and wobble.

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