What’s the worst eyesight prescription?
What Eye Prescription is Considered Legally Blind.
In the United States, an individual is considered “legally blind” if their vision with glasses or contacts is 20/200 or worse..
Is minus 2.75 eyesight bad?
Sph (Sphere) If you have a minus number, like -2.75, it means you’re short-sighted and find it more difficult to focus on distant objects. A plus number indicates long-sightedness, so objects up close appear more blurred or close vision is more tiring on the eyes.
What vision is considered legally blind?
If you’re legally blind, your vision is 20/200 or less in one eye. That means if an object is 200 feet away, you have to stand 20 feet from it in order to see it clearly. But a person with normal vision can stand 200 feet away and see that object perfectly. An estimated 1.1 million Americans are legally blind.
Who has the worst eyesight in the world?
Japanese people tend to have the worst eyesight of any national group in the world — it is estimated that over 60% of Japanese wear either contacts or eyeglasses on a daily basis. Other vision problems are common in Japan too. In 2005, researchers found that 1 in 20 Japanese men were colorblind.