A pterygium is a growth that develops on the conjunctiva or mucous membrane that
covers the white part of the eye. It is a benign or noncancerous growth that is
often shaped like a wedge. In some cases, a pterygium can extend to the cornea.
A pterygium usually doesn't cause problems or require treatment, but it can be
removed if it interferes with vision. The exact cause of pterygium isn't known
but one explanation is that too much exposure to ultraviolet light can lead to
these growths (Healthline.com). This book is a comprehensive guide to the
diagnosis and management of pterygium. Divided into four main sections,