A visual acuity of 20/200 is considered low vision, not far removed from legal blindness. WebMD defines low vision as a visual acuity of between 20/70 and 20/200, with corrective measures such as eyeglasses employed.Continue Reading
WebMD characterizes legal blindness as "having visual acuity that, in both eyes, can't be corrected to better than 20/200," so 20/200 vision is bad enough that it is quite near the limit for legal blindness.
According to the American Optometric Association, or AOA, a person with 20/200 vision expects to see clearly at 20 feet what someone with normal vision sees at 200 feet. The AOA classifies 20/200 acuity as a severe visual impairment.Learn more about Vision
Cystoid macular edema is an eye condition in which the macula, tissue in the middle of the retina responsible for visual acuity, becomes swollen, according to Cleveland Clinic. The swelling tends to create a cyst-like pattern, hence the name cystoid macular edemaFull Answer >
According to All About Vision, 20/15 eyesight is a measurement of visual acuity used in optometry, relating to eye test charts. The numbers indicate distance from the chart in feet.Full Answer >
According to MedlinePlus, a visual acuity measurement of 20/25 is only slightly worse than average. What "20/25" basically means is that a person's eye can see at 25 feet what a typical eye can see at 20 feet.Full Answer >
Health care professionals test visual acuity by evaluating how well a patient can see letters on a chart from different distances, states Healthline. The Snellen test is one common format that involves reading rows of letters or symbols of various sizes from a chart positioned 14 to 20 feet away.Full Answer >