Glossary of Terms

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Descemet's membrane - 

This is a thin but strong sheet of tissue that protects the eye from infection and injuries. It also holds a part of the cornea called the corneal endothelium. Descemet's membrane heals quickly after injury.
Descemet's stripping endothelial keratoplasty  - 

DSEK is another option for people who need a cornea transplant for cornea swelling. DSEK is also called the "sutureless corneal transplant," since it does not require stitches. DSEK has some advantages over traditional corneal transplant. These include faster vision recovery, a stronger eye, lower risk of rejection, and lower risk of conditions that can be caused by stiches, such as astigmatism and infections.
- Synonyms: DSEK
diabetic retinopathy - 

Diabetic retinopathy is the most common diabetic eye disease and a leading cause of blindness in adults in the U.S. It is caused by changes in the blood vessels of the retina. The retina is the light-sensitive tissue at the back of the eye. A healthy retina is necessary for good vision.
dilated eye exam -  For this test, the eye doctor will put drops in your eyes to widen, or dilate, the pupils. He or she will then use a special magnifying lens to examine your retina and optic nerve for signs of eye problems. After the exam, your close-up vision might remain blurred for several hours.
dry eye - 

In people with dry eye, the eye produces fewer or lower quality tears and is unable to keep itself moist and comfortable. The main symptom of dry eye is a scratchy or sandy feeling as if something is in the eye.