<prompt> Maximum refraction occurs atAnterior surface of corneaAnterior surface of lensPosterior surface of corneaPosterior surface of lens  <response>: Ans. a Anterior surface of cornea Ref: A K Khurana, 2ndpg. 50, and Basaks Ophthalmology 2ndpg. 4Refractive mediumRefractive indexCornea1.38Aqueous humor1.33Lens1.4Vitreous humor1.34Air1Maximum refraction occurs at anterior surface of cornea because:1. Anterior surface of cornea has greater curvature and2. There is greater difference between refractive indices of air and cornea.Refractive surfaceRefractive PowerAnterior surface of cornea48DPosterior Surface of cornea-4DLens of eye Vivo15DLens of eye taken out150D 