The retina is a thin, light-sensitive membrane covering the back of the eyeball and further attached to the optic nerve. As we perceive images, the retina converts these images into electrical impulses and sends them to the brain via the optic...
The human eye is a marvel of anatomy, providing us with the ability to see the world in all its textures, colors, and sizes. While dividing the eye into multiple layers can be done in a variety of ways, one way to think of layers of the eye is to...
The back wall of the eye is sensitive to light and is called the retina. It is a layer of tissue that sends signals via the optic nerve to the brain. The brain converts these signals to an image of what the eye is seeing. When retinal detachment...
A degenerative eye disease is a collective term for a disease that affects the various parts of the eye, including the retina, cornea, iris and macula. The common prognosis is a progressive loss of central vision. The diseases of the eye can be...
Doctors define legal blindness as 20/200 vision or worse. The numbers mean that someone with perfect 20/20 vision can see objects from 200 feet; someone with 20/200 vision can only see objects from 20 feet. Some eye conditions may cause temporary...
Age-related macular degeneration, or AMD, affects 10 million Americans and is the leading cause of blindness in people over age 60, the University of Maryland Medical Center says. AMD causes vision loss because it affects the macula, the central...
Cataract surgery, performed on over 3 million people in the United States each year, has a low rate of serious complications and generally excellent results. Over 95 percent of cataract surgeries result in improved vision, the All About Vision...