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> One thing I know he cannot do is drive a car

That's specific to your friend, not true in general. Lots of people drive with only one functional eye. At the visual distances involved, the depth perception provided by stereoscopic vision doesn't matter much. Especially with all the relative motion. My dad has been driving successfully for 65 years with only one working eye.




I drove for many years with amblyopia, so I didn't have much stereo depth perception. It did cause problems with parallel parking.


To be honest I don't know whether he is allowed to drive or not, he thinks he isn't allowed and never pursued it.


There's a cutoff of a 20/40 on at least one eye (corrected with class A restriction)




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