![]() It’s true that carrots can be part of a diet that supports eye health. Here are a few other misconceptions about blindness or blind people. Some blind people do have a very good sense of hearing, and blind people are able to glean a lot of useful information by listening.īut that doesn’t mean their actual sense of hearing is superior to someone who’s not blind - or that all blind people have great hearing. If you’ve ever heard that blind people have better hearing than sighted people, you’ve encountered one of the most common ones. There are a number of misconceptions that people have about blind people. The medication can help these people avoid the exhausting cycle of daytime fatigue and nighttime insomnia. Research shows that certain medications can help, however.Ī 2015 study published in Lancet showed positive results from a randomized, double-blind study that examined the use of a drug called tasimelteon, which is a melatonin receptor agonist. The inability to sense light prevents a person’s body from being able to correctly reset their biological clock, which results in a disrupted sleep schedule. This is a rare type of circadian rhythm disorder. It’s very common for people with total blindness to experience a condition called non-24-hour sleep-wake disorder. They found that the blind participants experienced four times as many nightmares as the people without vision loss. Researchers studied 25 blind people and 25 sighted people. It may be harder for blind people to get a good night’s sleep, as their vision loss affects their ability to distinguish between day and night.Īnother issue is that blind people may have more nightmares than sighted people, according to a 2013 study. The visually impaired people may use these “vision” areas to process other tasks. ![]() Processing informationĪ small 2009 study found that some people who have severe vision impairment may use parts of their brain that sighted people use for processing vision. Many people who have impaired vision don’t have additional sensory abilities that help them compensate for their vision loss. Keep in mind this isn’t true for everyone. You may find it interesting to ponder how blind people see and perceive information from the world around them.įor example, some people without sight may be able to process certain information with cues other than visual ones, like sound or vibration. Research estimates that approximately 1 million people in the United States can be considered legally blind. If you have to get within 20 feet of an object to see it clearly, when another person could easily see it from 200 feet away, you may fall into this category. So, where does “ legally blind” belong? Think of it more as a classification than a functional description of what a person can or can’t see or do. Some congenital eye conditions can develop during pregnancy and lead to blindness, while the causes of others are still unknown. This description applies to people who are blind from birth. Total blindness can be the result of trauma, injury, or even conditions like end stage glaucoma or end stage diabetic retinopathy. That is, a person who’s totally blind doesn’t see any light at all. Total blindness describes people with eye disorders who have no light perception (NLP). Many conditions can lead to low vision, including: However, you may still be able to see well enough with those corrective measures or magnifying devices to carry out most of your normal activities of daily living. The American Foundation for the Blind describes low vision as “permanently reduced vision that cannot be corrected with regular glasses, contact lenses, medicine or surgery.” If you have permanently reduced vision but retain some amount of your sight, you have low vision. There are a few different types of visual impairment that fall into the overall category of blindness.
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