Question

what is focal length of normal eye lens?

Answer 1

Answer:

The focal length of the average, healthy, adult human eye at near-point is about 18.5 mm. Young individuals can accommodate their lenses further to a focal length of around 15.4 mm. The focal length of the human eye is the distance between the lens and the retina when an object is in focus.

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Answer 2

Answer:

15.4 to 18.5 is the focal length