What is corneal dermatomycosis: It is a tumor-like congenital developmental abnormality that forms when the epidermis and its attachments are embedded in the cornea, tissue, during the closure of the embryonic fissure. Histologically it is not a true tumor, but a typical mydriasis. Clinical manifestations of corneal dermatomal tumor: 1. It is present at birth, stationary or growing slowly, and can affect vision when the tumor grows. 2. The tumor is mostly located at the edge of the bulbar conjunctiva and cornea below the temporal area, and sometimes at the central cornea, leaving only the peripheral cornea. 3.Most of the masses are smooth yellow round entities with slender hairs on the surface. 4, a few patients may have multiple dermatomes at the corneal edge. Treatment of corneal dermatomal tumors: Corneal transplantation: The surgical procedure of corneal transplantation is chosen according to the condition.