Question

give the uses of plano as well as bi focal lenses in different situation​

Answer 1

plano ....????

uses of bi focal lens

Answer: Bifocal lenses are used in the spectacles of people suffering from presbyopia, myopia, hyperopia or/and astigmatism. These have two distinct powers and hence serves two functions. One is distant vision and the other is closeup vision

Plano lenses are eyeglass lenses that provide no vision correction. They are in widespread use as protective equipment or safety spectacles designed to protect against eye injuries caused by flying dust, dirt, metal, wood chips, and other particles.

Answer 2

Answer:

Plano lenses are eyeglass lenses that provide no vision correction. They are in widespread use as protective equipment or safety spectacles designed to protect against eye injuries caused by flying dust, dirt, metal, wood chips, and other particles.

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