February 2023

Lots of things related to vision cannot be fixed with LASIK. Disease and degenerations like macular degeneration and cataracts are not at all suited for LASIK treatment. In the world of vision problems that glasses can correct (which is really what refractive surgery like LASIK is meant...

Is the Earth a sphere? More or less. It depends how accurately and detailed you want to measure them. The globe (eyeball) is shaped more like a pear: It has a "bulge" on the front where the cornea, iris, and natural lens are. The curvature of...