<prompt> Visual acuity of eye is:Refractive power of eyeAbility to discriminate two pointsAbility to increase converging power of eyelimitaion of occular movements  <response>: 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- 60D45D by cornea 15 D by lens. Ability to increase converging power of eye ACCOMODATION limitaion of occular movements - Diplopia 