Questions tagged [blind]

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Are LEDs more harmful for our eyes than sunlight?

Recently, the French health authority warned that LEDs can permanently damage our eyes because of their blue light levels. Other studies also showed that blue light exposure from LEDs may increase the ...
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18 views

Is echolocation common among the blind? Or not so much? How to learn to echolocate?

We know that echolocation is common among the animal kingdom, e.g. bats, dolphins, etc., but I've read it's also possible among humans as well (granted, we are a part of the animal kingdom too). I ...
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101 views

Are color-blind and blind individuals able to dream in color?

I know that individuals who have color-blindness or complete blindness, are not able to see as vast an array of colors as most. I do understand that they can distinguish shading (dark vs. light), but ...
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Child with -22 power, is it equal to blindness?

Doctor have advised -22 power glasses for my 3-year old daughter. Does it equal to blindness? Will she behave like a normal child - play, fight and ask for different things (as children do), identify ...
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1answer
128 views

How many different dialects of sign-language are there? And braille for the blind? Is it a different system for each language?

I know that there are several versions of sign languages out there for the deaf, hearing-impaired, and mute individuals (like we have American Sign Language -- ASL:, which must mean we have other ...
6
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101 views

How does a blind person react to hallucinogenic drugs

I've recently seen a post online stating the question: "What would happen if a blind person tried hallucinogenic drugs." (This entails 5-HT2A antagonists like Lysergic acid and psilocybin, the most ...