Lasik Eye Correction

What are the types of lenses and their relation to the Human Eye Problems?

Public Comments

1. Concave lenses are for nearsightedness (can't see far) Convex lenses are for farsightedness (can't see close)
2. http://images.google.com/imgres?imgurl=http://www.math.ubc.ca/~cass/courses/m309-01a/chu/Applications/eye-glasses.gif&imgrefurl=http://www.math.ubc.ca/~cass/courses/m309-01a/chu/Applications/apps.htm&h=289&w=388&sz=4&hl=en&start=8&tbnid=FOXOjzOprMBEAM:&tbnh=92&tbnw=123&prev=/images%3Fq%3Dcorrective%2Blenses%2Bdiagram%26gbv%3D2%26hl%3Den%26sa%3DG