Automated Phoropter Eye Exam in Covina

Refraction

A refraction is done by your eye doctor to determine the correct prescription lenses you need to see clearly. A refraction will determine if you have myopia, hyperopia, or astigmatism. Sometimes refractions are done with eyedrops in order for us to achieve more accurate results.

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Automated Refraction System

Marco automated refraction system

We have changed our manual phoropter (decades old technology) and changed to this automated, state-of-the-art refractive system. This has allowed us to get precise measurements for glasses and contact lenses; we can get as precise as 1 degree change for astigmatism! This phoropter can allow us to show you the difference between your old prescription versus your new one with a click of a button!

tiger chart

This chart is used instead of the usual paper chart for checking near vision. This chart can also simmulate your phone so we can give you the most accurate prescription when viewing your phone at near. We try to stay current with new technology.

Frequently Asked Questions

What is myopia?

Myopia is when the eyeball is too long or the clear front surface of the eye, the cornea, is too pointy. When light enters the eye it cannot focus on the retina and instead focuses in front of the eye - this causes distance objects to be blurry. Our eye doctor will prescribe you glasses and/or contact lenses to focus the light correctly on the retina so you can see clearly!

What is hyeropia?

Hyperopia is when the eyeball is too short or the clear front surface of the eye, the cornea, is too flat. When light enters the eye it cannot focus on the retina and instead focuses in the back of the eye - this causes near objects to be blurry. Our eye doctor may prescribe you glasses and/or contact lenses to focus the light correctly on the retina so you can see clearly (if necessary). Why "may" prescribe you? Because in mild cases your eye may be able to compensate without the need of glasses.

What is astigmatism?

Astigmatism is when the clear front surface of the eye, the cornea, is irregularly shaped and is not a perfect dome. In some cases, it can also be caused by the lens inside the eye. When light enters the eye it actually focuses in different locations on the retina. This causes objects to be distorted at any distance. Our eye doctor will prescribe you glasses and/or contact lenses to focus the light correctly on the retina so you can see clearly! Astigmatism can occur with myopia and hyperopia.

What is presbyopia?

It's a normal, age-related change of the lens inside the eye that causes vision at near to be blurry. This usually occurs after the age of 40 and older. Our eye doctor will prescribe you glasses and/or contact lenses to help you see clearly up close while reading or on the computer.