Question

List out the differences between axial and refractive ametropia

Answer 1

Refractive ametropia: An emmetropic eye has 60 dioptres, which makes it possible to see sharp images of objects at an infinite distance without any special effort. An ametropic eye may have more or less than 60 dioptres and therefore requires a correcting lens to provide sharp vision at any distance.

• Axial ametropia: The inability to focus properly may be due to a deviation in the axial length, so this difference also needs to be corrected with a lens. Ametropia may also consist of a combination of refractive and axial ametropia.