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