If you're blind and go to a shooting range, how to you judge where the target is, assuming someone places you in a straight line with the target? In Iowa, blind people can now own gun permits. Check out the September 9, 2013 news articles, "Blind People Are Granted Gun Permits in Iowa - ABC News," "Iowa grants gun permits to the blind - USA Today," and "Blind faith: Iowa grants gun permits to the visually impaired — RT USA."
In Texas, the legally blind are allowed to hunt, accompanied by a sighted partner, using laser sighting devices. Being legally blind is vision-impairment rather than total blindness, where opening the eyes looks more like seeing velvet black compared to seeing shadows of light or shadows of people and objects. Iowa allows legally blind applicants to obtain gun permits and carry weapons in public. The law protects people with disabilities from being denied the right to own a gun. Under state law, a bid to deny a blind Iowan their Second Amendment rights due to physical disabilities would be illegal.
At a shooting range, a blind person can be shown where to stand, point and shoot in a direction such as straight ahead at a target and not turn or twist away from where the target is supposed to be lined up to where the blind person is standing. Gun permits also can be obtained by people with various stages of visual impairments. For example, a driver's license can be obtained by a person with one eye if the person takes a test every two years, depending upon what the person's eye doctor writes to the motor vehicles bureau. But the one good eye needs to pass the vision test on the eye chart at the DMV, for a driver's license. When it comes to guns, you'd have to be able to see something like a target. If you only see blurred shadows, then you shouldn't be shooting a gun.
The National Federation of the Blind is not in favor of laws that require vision tests as part of weapon permit processes
The Gun Control Act of 1968 and other federal laws do not prohibit blind people from owning guns. Each USA state has different rules governing gun permits. Each state will differ on who can obtain a gun permit based on disability.
Nebraska and South Carolina require applicants for gun permits to show "proof of vision" presenting a valid state driver’s license or a statement from an optician, according to the USA Today article, "Blind People Are Granted Gun Permits in Iowa - ABC News." You may wish to also check out the article, "Iowa grants gun permits to the blind." The question that arises is whether people have enough common sense to know when their vision has deteriorated to a point where a person, animal, or property could be mistaken for the target.
States have different laws. For example, says the USA Today article, Missouri and Minnesota applicants must complete a live fire test where they have to shoot and hit a target. But it's different in Wisconsin and Iowa, where there's no law requiring visual restrictions on gun permit applicants. For more information, check out the ABC News article, "Blind People Are Granted Gun Permits in Iowa."