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What is Refractive Error?

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Blog

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EyeQue Team

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May 25, 2018

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Refraction in your eye occurs when light rays that reflect off objects and travel through the eye’s optical system are refracted and focused into a point of sharp focus. However, if your eyes have a refractive error, this means the unique shape of your eye is preventing light from directly focusing on your retina. People who suffer from refractive error may not perceive depth clearly and may have difficulty seeing in certain situations, such as while reading or driving.

Here are some common types of refractive error you may experience:

Myopia (Nearsightedness)

This condition prevents you from clearly seeing far away objects. This is because light focuses in front of your retina, as opposed to directly on it.

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Hyperopia (Farsightedness)

This condition is the opposite of myopia. The term ‘farsightedness’ can be misleading. This is because some people with hyperopia may have trouble seeing objects at any distance—not just those which are nearby.

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Astigmatism

This condition is extremely common and generally appears in everyone as we age. Light isn’t able to focus evenly on the retina.  This causes your vision may appear blurry and develop ‘halos’ around bright objects.

Presbyopia

Presbyopia occurs after the age of 40. As we get older, the lens of our eye hardens and is unable to expand and contract as easily. As a result, it becomes difficult to view objects which are nearby.

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It can be difficult to tell if you have a refractive error. This is because it’s hard to compare your vision with ‘normal’ vision when you only have one set of eyes! However, if you constantly find yourself squinting to see certain objects, suffering from headaches, or noticing a burning sensation in your eyes, these could be signs of refractive error. The onset of refractive error is especially prevalent in children; learn more about the signs that you need glasses, here.

Fortunately, if you suffer from one of these conditions, the issue can usually be solved. Refractive error can be treated with eyeglasses, contacts, or laser eye surgery. The first step is either getting an eye exam to measure your refractive error, or measuring it in the convenience of your home with one of EyeQue’s products. After you use our EyeQue Insight 20/20 vision screener to determine whether you are seeing 20/20, then use the EyeQue VisionCheck to determine what type of refractive error you have. Even if you don’t currently wear glasses, you should still visit your eye doctor regularly to ensure the health of your eyes.

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