TY - JOUR T1 - Histology of pterygium: an electron microscopic study. JF - British Journal of Ophthalmology JO - Br J Ophthalmol SP - 604 LP - 608 DO - 10.1136/bjo.67.9.604 VL - 67 IS - 9 AU - M E Cameron Y1 - 1983/09/01 UR - http://bjo.bmj.com/content/67/9/604.abstract N2 - An electron microscopic study of the cap areas of several pterygia shows the presence of active fibroblasts in the natural tissue planes surrounding Bowman's layer. The hypothesis is advanced that the fibroblasts originate in the limbal connective tissue. They advance in the cornea above and below Bowman's membrane, destroying the latter and a variable amount of superficial corneal stroma. ER -