<prompt> Refractive Index of cornea is about1.31.331.371.42  <response>: Refractive index of the cornea 1.37, Refractive index of the aqueous humour 1.33, Refractive index of the crystalline lens 1.42, and Refractive index of the vitreous humour 1.33 Ref:Khurana 4e pg: 26 