1

If I focus on the ring in this image (the ring is 1 cm tall on my monitor, I stand 300 cm away, the room is dark, and I cover one eye), I actually see an "8" formed from double-vision where the lower ring is dimmer. So, I'd simply say that this lower ring is caused by a cataract.

To be honest, the "cataract ring" is not just lower, but also slightly right; the off-vertical angle is roughly 20 degrees. It's interesting that my other eye also has similar downward double-vision (with a smaller 10 degree rightward shift). (I get even more cataract glare details when I focus on the small dot to the left, instead of the ring, but I'm trying to keep this question simple.)

Do most people have downward double-vision in both eyes like me? If so, is there any theory about why/how the eye changes asymmetrically as we age? I guess that the exact statistical study I'm suggesting here has never been done, but hope cataracts have been studied enough to answer theoretically.

enter image description here

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.