atmospheric refraction

Asked by  | 13th Jul, 2008, 08:15: PM

Expert Answer:

Presbyopia describes the condition where the eye exhibits a progressively diminished ability to focus on near objects with age.

Astigmatism is an optical defect, whereby vision is blurred due to the inability of the optics of the eye to focus a point object into a sharp focused image on the retina

Answered by  | 14th Jul, 2008, 12:08: PM

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