Fuchs' endothelial dystrophy is a genetic eye disorder that affects the cornea, the clear front part of the eye. It occurs when the endothelial cells, which help maintain corneal clarity by pumping out excess fluid, become damaged or die. This can lead to swelling, cloudiness, and vision problems. Symptoms often develop slowly and may include blurred vision, glare, and sensitivity to light. In advanced cases, a corneal transplant may be necessary to restore clear vision. Early diagnosis and monitoring are important for managing the condition effectively.