Why cant some people see 3D?

Answer 1

Well I have been studying this and my answer is, it depends it seems. People who are born blind on one eye probable can't even though they can have some limited sense of perception. But people which have lost the sight on one eye seem to be much better at feeling 3D it seems to me after some study. Red/cyan doesn't work for either but Real 3D seems to work to some degree for people who have lost sight of one eye. Being near the screen seems to help (and in center?) Have done test on two people which are born with one eye vision and neither saw any difference when I switch between 2D and 3D and have heard of other cases the same. But I have heard of people which have lost sight after they where maybe 10+ that they have experienced 3D with real 3D glasses. Not all but some? I am planning to do a test in a few weeks to test this on a friend who lost nearly all sight on one eye when he was 16+ And is now 50+ but told me he had recently seen part of a 3D movie in Real 3D and told me he had experienced 3D by blocking the bad eye wearing Active 3D glasses!! Will switch between 2D and 3D and see if he can tell which is which. Why it works(better?) if you are not born blind on one eye? Don't know (am a wireless/broadcast/electronic engineer) but maybe 3D vision develope when you are young and if you never have sight on one eye your brain never learned to decode? Don't know. See how it goes with my friend...

No. It is the two visual fields (one from each eye) that, when combined in the visual cortex of the brain, produce our sense of depth and speed.

But, there are two different types of cues the brain uses to asses the depth of a scene. Mono occular cues and binocular cues. Depth information can be produced by the brain using mono ocular cues acquired by just one eye. So it is possible that with one eye we will get a 3D feeling, which is not complete. You can experience this effect if you watch a movie (2D) with one eye closed.

The small difference in images acquired by both eyes, called the binocular disparity, belongs to the class of binocular cues, and this is the mostly used cue by the brain to produce a 3D effect.

I DON'T KNOW, BUT YOU CAN TRY REAL 3D OR IMAX.. THEY ARE NOT USING RED AND CYAN ANY MORE. I WENT TO THE CINEMA AND I CLOSE MY EYES USING ONE EYE AND STILL WORK THE 3D.

this information is utterly false lmao. you still see depth if you cover one eye with your hand, ie, if you close one eye you can easily tell what the distance difference between objects is. losing one eye simply reduces your field of vision, not your ability to see stereo 3D. people who loose one eye can still see depth, they loose 50% of their field of view if an eye is dammaged, not the ability to see depth for real, just an inibility to use 3D products.

if you loose an eye you wont be able to see 3D anaglyphs or other products that use stereocameras.

not having two cameras or systems will not allow you to see 3D but your eyes see depth regardless if one eye is shut or close or if one eye has dammage. you don't loose depth perception if you close an eye, you simply loose the amount of area able to see. the human eye has both resolution distance and light based stereo 3D and parallel eye stereo features.your eyes 3D resolution improves based on how close you are to something and based on how much light is available.

I'm sorry but the person above me has no idea what they are talking about. I lost my left eye in an accident. My Depth Perception is completely skewed, not to much to where I can't judge where a glass of water is but enough to throw me off a few times. If you have two eyes and simply close one eye that's not at all accurate for judging depth. I watched a 3D tv at bestbuy and couldn't tell much of a difference. I could to a very slight increase in depth but not 3d like my father could. I know the green and red glasses don't work for me and as for REAL 3D at the movies I have not tried because I don't not want to waste my money if it doesn't work.. hope this helps

To the guy above me you are right. Im 16 been living with sight in 1 eye and viewing 3d is the same as looking in 2d. If a legally blind person has the Red and Cyan glasses he/she has completely wasted money on that movie. If they have the same glasses like with Real3D and IMAX i could possible see a little. I if i sit under the screen at the bottom i can see 3D but anywhere else nothing... Hope this Adds on!

I lost my left eye when I was 15 and I am now 48. I went to the IMAX at Johnson space center many years ago and would see double images with the glasses on. I assumed that I could never see 3D because I had one good eye. However, I just went to universal studios with my brother and we went to Spiderman 3D and Shrek 4D (so at least he could experience it) and in both cases I could see the 3D effect to some degree. I was suprised.

I'm the guy that told the story about the 3D TV at bestbuy up above. I went to the movie SAW 3D recently and with the new REAL 3D glasses I saw dramatic improvement. I could only really see "more depth" on the lionsgate logo, that was the most "3D" thing to me. When I wore the glasses the movie looked fine and normal. When i took them off, it was double vision. So you can watch REAL 3D movies WITH GLASSES and watch it as a normal movie with some depth, but the Red and Cyan does not work.

To the person above saying you have depth perception with one eye, that is false. I was born with only one functioning eye and by any medical definition of the term, I have no real "depth perception". Just like the deaf learn to read lips, your brain learns to judge distance based on experience and previous knowledge, even that learned in childhood. You learn distances as you go along, but you don't actually see them for what it really is, you only know motion memory and reference points. As far as the info about the 3D movies above, thanks for the tip. I'll have to try the new glasses. My son is 5 and loves the 3D movies, i just have to suffer through them. I'll look into it and get back to you. I haven't been able to see anything 3D even the calendars and images. The ability to judge depth comes the perception of 2 individual and reversed focal points and judgments. Seeing depth is not knowing it.

I am blind in the left eye from car wreck. It was recent, but I have depth perception just took some getting used to. I hope 3d will work for me have waited all my life, and now this.

Answer 2

Just barely. You can't get the whole effect though. Personally, I think it's not fair!

Answer 3

It is very, very unlikely. But it is possible.

Answer 4

No, you need vision in both eyes to see in 3D.

you can see films in 3 d using clear lens 3 d glasses and i max - you cannot use the red/blue glasses