While you can still technically see, a partial loss of vision can be dangerous. This can also lead to a loss of partial vision, like losing your peripheral (side-to-side) vision and/or making driving a car or walking along city streets extremely difficult.
In diabetic retinopathy, for example, burst blood vessels can cause blood and other fluid to leak into your eye, creating “floaters.” For some, it may be temporary until the leaked fluid is gradually reabsorbed into the eye tissue.įor others, the complications of these eye diseases can create permanent damage to your retinas, macula and more. Retinopathy, glaucoma, or macular edema can all threaten your ability to see. Other aspects of eye complications related to diabetes can worsen your vision past 20/200. While we often think of blindness as being unable to see anything, there are actually many levels of limited sight that qualify as blindness.īased on visual acuity testing, a person is considered legally blind when their best corrected vision is 20/200, which means they need to be at least 20 feet away to see something that a person with normal vision can see from 200 feet away.įor people with diabetes, it can be a bit more complex than simply a change in your basic vision. When is a person considered legally blind? The visual acuity test will catch these changes and may alert your eye doctor to other health concerns in your eyes. And anyone with glasses or contacts will also need annual check-ups to be sure your prescription is updated.ĭiabetes can potentially lead to sudden or rapid changes in your vision.
Visual acuity testing should be done at your annual eye exam. For example, 20/15 vision means you can see something from 15 feet away that people with standard 20/20 vision can see from 20 feet away. Some people have better than 20/20 vision. When you have a result like 20/40 or 20/80 vision, that means you need to be 20 feet away from something that people with 20/20 vision can see from 40 or 80 feet away. The test uses numbers, letters and pictures (for children). The vision test you’ve probably been doing since you were 3 years old is called visual acuity testing and it determines whether your vision is 20/20 or something else.
Normal vision is 20/20 or better, which means you can see something clearly from 20 feet away-the standard vision ability for healthy eyes.
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