Why is refraction useful?

Refraction is used in lenses to cure many eye diseases like Myopia(Short-sightedness) and Hyperopia(Long-sightedness). In Myopia, the image is formed in front of the retina and hence a concave lens is used to correct this as it helps to diverge the rays before they meet, and hence help to form image on the retina. Myopia. read more

Refraction is used to bend light, usually to perform an imaging task. This is done by constructing a lens. It is also used to separate the wavelengths in the light wave by constructing a prism. read more

Well, for one thing, the formation of an image on the retina ofyour eye depends on refraction of light by the cornea, the lens, and the fluids. read more