A person cannot clearly see distance more than 40 cm. He is advised to use lens of power,
A. – 2.5 D
B. 2.5 D
C. – 6.25 D
D. 1.5 D
Answer:A
A person cannot clearly see distance more than 40 cm. He is advised to use lens of power,
A. – 2.5 D B. 2.5 D C. – 6.25 D D. 1.5 D