Refractive index and the speed of light

The refractive index of the vitreous fluid in our eyes with respect to the lens of the eye, $n_{\text{VL}}=0.93$‍. The speed of light inside the lens, $v_{\text{L}}=2.14\times {10}^8{\displaystyle \frac{\text{m}}{\text{s}}}$‍.