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Interesting, I wonder how long the adjustment takes. I know when I only have one contact lens in I definitely have a trouble with depth perception, even after a couple of hours.
aggi-
Interesting, I wonder how long the adjustment takes. I know when I only have one contact lens in I definitely have a trouble with depth perception, even after a couple of hours.
Depends on your refraction.
If you're a spherical -2.00 then yes, a lens in one eye gives you tolerable "mono vision".
If you're a spherical -4.00 then a lens in one eye will be a disaster. these folks will need a -4.00 lens in one eye and a -2.00 lens in the other. (Or something to that extent)
Also depends on how much astigmatism you have which could need correction.
Bottom line is that having a reasonable amount of residual myopia in one eye can be a solution to the problem of presbyopia.
It's good idea, if you wear contact lenses, to start dosing this once you are relying on reading glasses, because then you're set up to permanently - and confidently - carry this out when the time comes for cataract surgery.
Yes there are presbyopia reducing cataract lenses, but they are non-ideal and getting to know what works for you early on is really smart.
Generally you put the near vision in the non-dominant eye.
bright
No, if you've had stereoscopic vision in the past then your brain can always do depth perception, even if you lose one eye completely*. The vision in my right eye is dreadful due to keratoconus but I don't have any problem with depth perception.
Depth perception is only a problem for people who've never had stereoscopic vision.
* An old colleague of mine lost an eye at 12 or so. He's able to drive without a problem.