Why does 20 20 vision mean




















Oval Gold. Shop Eyeglasses Contacts Eye Exam. Contact Us Find a Store. All rights reserved. Privacy Policy. Other important vision skills, including peripheral awareness or side vision, eye coordination, depth perception, focusing ability and color vision, contribute to your overall visual ability.

Some people can see well at a distance but are unable to bring nearer objects into focus. This condition can be caused by hyperopia farsightedness or presbyopia loss of focusing ability.

Others can see items that are close but cannot see those far away. This condition may be caused by myopia nearsightedness.

A comprehensive eye examination by a doctor of optometry can diagnose what is affecting your ability to see well. In most cases, your doctor of optometry can prescribe glasses, contact lenses or a vision therapy program that will help improve your vision. If the reduced vision is due to an eye disease, you may be prescribed ocular medication or another treatment. Other important vision skills, including peripheral awareness or side vision, eye coordination, depth perception, focusing ability and color vision, contribute to your overall vision ability.

For onsistency, doctors of optometry in the United Sates use 20 feet as the standard for measuring sharpness of vision. Your eye doctor or an assistant will use an instrument to show you choices of lenses to sharpen your eyesight. Objects that are similar in brightness to their background. How accurately the cornea and lens focus light onto the retina. Only light focused on a small and sensitive portion of the central retina, called the macula, influences the measurements you get during an eye exam.

Outside the U. Eyecare providers measure your visual acuity as part of an eye exam. The Academy recommends that you get a baseline eye examination at age This is when early signs of disease or vision changes may happen.

About Foundation Museum of the Eye. Eye Exams. By Celia Vimont.



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