Question

A person is tested to rectify his eye problem and
ested to rectify his eve problem and doctor is drawn
this diagram to explain him the problem
3
What defect of eye is detected?
What type of lens is suggested to rectify this defect?
If the focal length of the suggested lens is 40cm find the power
of his lens and what is the main reason of causing this defect​

Answer 1

Answer:

a)presbyopia is the eye problem.

b)bifocal lens are used.

c)Since focal length=0.4 m, power of the lens=1/0.4=2.5 diopters