What Is Astigmatism?

What Is Astigmatism 

Astigmatism is a condition where your eye faces a common vision problem due to an error in the shape of your cornea. In astigmatism, the front surface of your eye, also known as the cornea, has an irregular curve instead of a regular one. 

Astigmatism will distort vision at both far and near distances. It is often seen in combination with myopia, also known as nearsightedness or hyperopia, also known as farsightedness. These are two other types of issues with the way light passes through your retina.

Causes Of Astigmatism  

Now, there are two main types of astigmatism which are corneal and lenticular. A corneal astigmatism happens when your cornea is misshapen. A lenticular astigmatism happens when your lens is misshapen. Currently, it is not known what causes astigmatism, however it is said that genetics plays a big part. It’s often present at birth, but it may develop later in life. It may also be caused due to an injury to the eye or after eye surgery. Astigmatism often occurs with nearsightedness or farsightedness. 

What Are Symptoms Of Astigmatism 

Astigmatism can cause blurry vision all-around, whether if you are close or far to the target item. Therefore, bringing the target item nearer or further will not help to clear things up. Objects may also look shadowed or distorted and night vision may be difficult. Squinting may help to clear things temporarily but that may lead to eyestrains or headaches.  

How Can Astigmatism Be Diagnosed 

An optometrist or ophthalmologist will diagnose astigmatism through a comprehensive eye examination. An optometrist is a doctor who diagnoses vision problems and eye diseases while an ophthalmologist is a doctor who provides medical and surgical treatment of vision problems and eye diseases.  

There are three main tests in the comprehensive eye examination which are visual acuity assessment test, refraction test and keratometry. 

A visual acuity assessment test is where your optometrist or doctor will ask you to read letters from a chart at a specific distance to see how well you can see the letters or how blur you see them. Afterwards, a refraction test, that utilizes different machines such as an autorefractor and a phoropter (consisting of multiple corrective glass lenses of different strengths) will be used. Through this your doctor will ask you to read a chart while looking through the lenses of different strengths on the phoropter. They will then be able to successfully find a lens that has the correct power to appropriately correct your vision. 

Our Recommended Choice for Treating Astigmatism 

Here at Hyperion, we recommend coming down to our store to have a comprehensive eye examination conducted by our partner Optometrists. By doing so, we will be able to create a pair of glasses for you with our signature Accolade lenses and the Hyperion frame of your choice to fix your vision. Our eyeglasses lenses will be designed to be curved to counteract the shape of your cornea or lens that is causing blurriness or astigmatism. These “tailor” made glasses will work well when you look straight ahead, but depending on how much correction is needed, they may or may not make the floors or walls look tilted. However, the more you get used to glasses the less severe the tilted effects will be. 

References and Citations 

Astigmatism: Symptoms, causes & treatment. Kraff Eye Institute. (n.d.). Retrieved January 20, 2022, from https://kraffeye.com/blog/astigmatism-symptoms-causes-treatment 

Kivi, R. (2018, September 17). Astigmatism: Causes, types, and symptoms. Healthline. Retrieved January 20, 2022, from https://www.healthline.com/health/astigmatism#treatments 

WebMD. (n.d.). Astigmatism: Causes, symptoms, diagnosis, and treatment. WebMD. Retrieved January 20, 2022, from https://www.webmd.com/eye-health/astigmatism-eyes 

Boyd, K. (2021, December 6). What is astigmatism? American Academy of Ophthalmology. Retrieved January 20, 2022, from https://www.aao.org/eye-health/diseases/what-is-astigmatism 

Ko, T. M. K. (2020, June 24). What is astigmatism? - eyescreen™ - safeguarding your child's window to the world. EyeScreen. Retrieved January 20, 2022, from https://eyescreen.cordlifetech.com/what-is-astigmatism 

What Is Astigmatism?