There are two basic types of eye vision tests, a phoropter exam and an indirect one. Both involve the use of a magnifying lens to examine the eye and light that bounces off the cornea. The phoropter exam is a good way to measure the refractive error of the eye. Patients usually wear trial frames, […]
The human eye is a remarkable optical device, and its function is essentially to see. This is accomplished by utilizing a number of different structures, including the retina, the choroid, and the iris. The eye is roughly spherical, with the white part, or sclera, sitting on the outside of the eye and the dark, pigmented […]
Various contact lens uses are being researched by scientists. These include bionic lenses, telescopic lenses, and contact lens uses for drug delivery. While the research is not yet complete, new polymers will likely make ambitious projects a reality. Smart contact lenses may also be on the way. Samsung and Sony are working on developing such […]