For a myopic eye that cannot focus on objects more than 25 cm in front of it,the power in diopters of the lens needed for distinct distant vision is
A)+25 diopters
B)+4.0 diopters
C)-4.0 diopters
D)-2.5 diopters
E)None of these is correct.

Question

Quizplus · Accepted Answer

For a myopic eye with a near point of 25 cm, we can find the diopter power required for distant vision by taking the reciprocal of the near point in meters:
1/0.25m = -4 diopters. The negative sign indicates that a concave lens is needed to correct the myopia. Therefore, choice C (-4.0 diopters) is the correct answer.

For a Myopic Eye That Cannot Focus on Objects More