An eyelid coloboma is a full-thickness defect of the eyelid. Although eyelid colobomas can occur in many locations, the most common position is at the junction of the medial and middle third of the upper lid. No lid appendages or accessory structures usually are seen within the colobomas. No known racial predilection exists. By definition, congenital colobomas are present at birth.
Corneal protection is the primary goal.
The surgical procedure used depends on the size and the location of the defect. Usually, it is corrected by direct closure. The edges of the defect are freshened with sharp incisions, and precise anastomosis is preformed. The lid margin is brought together using a 2-layer approximation of the tarsus and the skin. Large - These defects usually need immediate surgical closure to prevent corneal compromise.