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MEDICAL EXAMINER recipe feature PAGE 7

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AIKEN-AUGUSTA’S MOST SALUBRIOUS NEWSPAPER • FOUNDED IN 2006

SEPTEMBER 1, 2017

HydroMatic

What is 20/20 vision? SEE PAGE 3

FOREVER

We all think we know the answer, but do we? Of course, “what is 20/20?” is the simple question. What about the meaning of 20/40 or 20/80? According to the American Optometric Association, 20/20 describes “normal” visual acuity, or clarity and sharpness of vision. The numbers describe distances from a standard eye chart, with 20 feet being the “control” distance. A person who has 20/20 vision can see at 20 feet away from an eye chart exactly what they should be able to see. Someone with 20/100 vision describes a person who has to get 20 feet from the eye chart to see what a person with normal visual acuity can see from 100 feet away. While 20/20 is considered the standard for perfect vision, it only measures visual clarity at 20 feet. A person with 20/20 vision could have very limited peripheral vision, be color blind, have difficulty focusing their eyes, or need reading glasses to read this newspaper on paper or online. People who can see things up close but not far away may have myopia (nearsightedness). Those able to clearly see what is far in the distance may have hyperopia, or farsightedness. If the condition is caused by loss of elasticity in the lens and the inability to focus, the diagnosis is often presbyopia. If that sounds like “presbyter,” defined as a church elder or minister, it’s not your imagination. Presbyopia has its roots in Greek: presbus - “old man” + ops - “eye.” Glasses, contact lens or surgery can often improve, correct or restore better vision. +

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