Which component of the eye has a maximum refractive index –

Lens has maximum refractive index among the refractive structures of eye. The refractive indices of the successive layers of lens increase from the periphery towards the nucleus. Therefore :- Anterior lens cortex →  Refractive index is 1.386. Posterior lens cortex → Refractive index is 1.386. Centre of lens (nucleus) →  Refractive index is 1.46.