Question

define the folowing least distance of distinct vision.

Answer 1

Least distance of distinct vision is the minimum distance at which our eyes can see an object properly and clearly without any strain.
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Answer 2

The distance of near point from the eye is known as least distance of distinct vision...For a normal eye, its value is about 25 cm...

(near point-- the point nearest to the eye at which an object is visible distinctly is called near point)

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