Diabetic retinopathy is an eye disorder in which changes in the blood vessels of the retina (the light-sensitive membrane that lines the back of the eye) can lead to vision loss or blindness. The disorder occurs in people who have…
Macular degeneration is a disease characterized by irreversible deterioration of the light-sensitive cells of the macula—the part of the retina (the light-sensitive membrane lining the back of the eye) that provides sharp focus in the center of the field of…
Sometimes an underlying disease or condition, such as Graves’ disease or a tumor behind the eyeball, causes one or both eyeballs to bulge forward in the orbits. In some cases, an infection that has spread to the soft tissue of…
Eyelid problems range from benign, self-resolving processes to malignant, possibly metastatic, tumors. Fortunately, most eyelid disorders are not vision-threatening or life-threatening; however, many cause irritative symptoms such as burning, foreign-body sensation or pain. Ptosis [h3] Ptosis is a condition in…
Since the outside of the eye is in direct contact with the environment, it is susceptible to infections and injuries. There are also a number of hereditary diseases which can impact the outer eye.
Many eye diseases have no early symptoms. They may be painless, and you may see no change in your vision until the disease has become quite advanced.
In the eye, the cornea and lens work together to refract (bend) light rays from viewed objects and focus them on the retina, thereby producing an image. In normal vision, the light focuses directly on the retina, producing a sharp,…
