Visual acuity of eye is:: (A) Refractive power of eye, (B) Ability to discriminate two points, (C) Ability to increase converging power of eye, (D) limitaion of occular movements
Answer is B. Measurement of the threshold of discrimination of two spatially separated targets (a function of the fovea centralis) is termed visual acuity. Refractive power of eye-= +60D(+45D by cornea +15 D by lens). Ability to increase converging power of eye ACCOMODATION limitaion of occular movements - Diplopia