Question

How does the least distance of distinct vision vary between the very young and old people?

Answer 1

"" In young people the least distance of distinct vision is infinity for a normal person. But with the time, the ciliary muscles become weak in old people resulting in the image of object placed at infinity to slightly near our eyes than infinity. The image is formed before the retina and not on the retina, so the image is also seen before infinity.""

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