If a lens has a higher index of refraction, what is the likely effect on its thickness?

A lens with a higher index of refraction typically indicates that the material is denser and can bend light more effectively than a material with a lower index. As a result, if the lens is made from a material with a higher index of refraction, it can achieve the same optical power as a lens with a lower index but with a reduced thickness.

This is because a higher index of refraction allows the lens to bend light rays more sharply, requiring less material to achieve the desired focal length. Consequently, for lenses designed to correct vision or manipulate light, a higher index can lead to a slimmer profile, making them lighter and less bulky while maintaining optical effectiveness.

Thus, a lens made from materials with higher refractive indices is often thinner compared to the same lens designed with a material of lower refractive index.