I went to a doctor for my eye checkup. And I couldn’t read the last line at all. Doctor said this is the limit to your eye and no matter how strong a lens, you would never be able to read the last line

Question

But I don’t get it. Why would if I put a stronger lens, I wouldn’t be able to read the last line? She said you must have never been able to read the last line in your life, and she was correct, but I don’t understand the science at play here

In: 58

Answer 1

Your overall vision depends on three aspects: (1) the sharpness of the image as it enters your eye, (2) the overall health of your retina itself, and (3) the sensitivity of your brain to interpret these signals.

Corrective lenses can help with 1 (that too not perfectly), but not 2 or 3. So people have a natural limit to how well they can see.