How corrective lenses can help.
Sometimes the light is not reflected properly from the cornea and the iris onto the retina due to the fact of an eye not being 100% perfectly formed properly (i.e shortened eyeball) or damage to the eye itself. By using corrective lenses the light rays are adjusted properly so that the point of intersection lands right on the retina which enables us to see the image clearly and properly.
How to look fashionable while wearing glasses. (n.d.). Retrieved March 04, 2016, from http://search.insing.com/feature/look-fashionable-with-glasses/id-d0593101
Use of lenses for correcting vision - Pass My Exams: Easy exam revision notes for GSCE Physics. (n.d.). Retrieved March 04, 2016, from http://www.passmyexams.co.uk/GCSE/physics/use-of-lenses-for-correcting-vision-eyesight.html
