For a person near point of vision is 100 cm. Then the power of lens he must wear so as have normal vision, should be
A. + ID
B. – ID
C. + 3D
D. – 3D
Answer:C
For a person near point of vision is 100 cm. Then the power of lens he must wear so as have normal vision, should be
A. + ID B. – ID C. + 3D D. – 3D