Endothelial Cell Count (ECC) refers to the number of endothelial cells present in a specific area of the cornea, the clear front part of the eye. These cells play a crucial role in maintaining corneal transparency and regulating fluid balance. A healthy ECC is essential for proper eye function, as a low count can lead to corneal swelling and vision problems. ECC is often measured during eye examinations, especially for patients considering cataract surgery or those with glaucoma. A normal count typically ranges from 2,000 to 3,000 cells per square millimeter. Monitoring ECC helps eye care professionals assess corneal health and make informed treatment decisions.