while pterygi form at the junction of the white of the eye and the cornea, known as the limbus. "Most commonly, a pinguecula develops first and when it progresses and invades into the cornea ...

The outer border of the cornea, the limbus, contains many healthy stem cells ... As a result, the surface of the eye develops permanent damage -- a condition called limbal stem cell deficiency.

The outer border of the cornea, the limbus, contains many healthy stem cells ... As a result, the surface of the eye develops permanent damage -- a condition called limbal stem cell deficiency.

Medical research has shown that tissue stem cells taken from a part of the eye called the limbus can be used to repair damage to the cornea, the transparent layer at the front of the eye.