Visual acuity of eye is:
Refractive power of eye
Ability to discriminate two points
Ability to increase converging power of eye
limitaion of occular movements
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
Optics and Errors of Refraction