Question

"The Human eye works on the refraction of light through a natural convex lens made of transparent living material and enables us to see things around us."I have a doubt in this line that why it is said that "human eye works on the refraction of light" and why not "human eye works on the reflection of light"?

Answer 1

A light ray can be deflected, reflected, refracted or absorbed, depending on the different substances it encounters.
The role of reflection occurs when we see the objects. We can see the objects, when light rays, that reflect off objects and travel through the optical system of our eye are refracted and focused into a point of sharp focus.
Our eye is able to refract light and produce a focused image. Thus, we can see the objects.
Human eye have refractive properties similar to water or lenses and can bend light rays into a precise point of focus essential for sharp vision.
Most refraction in the eye occurs when light rays travel through the cornea. The natural convex lens of our eye also bends light rays.