Question

What are the similarities and differences between the pathology of pterygia and pingueculae?

Accepted Answer

● Similarities:
○ Both have fragmented stromal collagen with
basophilic “elastotic” degeneration
○ Degeneration is due to chronic UV light
exposure
● Differences:
○ Pterygia = involves the cornea and
destruction of Bowman’s layer

Front	What are the similarities and differences between the pathology of pterygia and pingueculae?
Back	● Similarities: ○ Both have fragmented stromal collagen with basophilic “elastotic” degeneration ○ Degeneration is due to chronic UV light exposure ● Differences: ○ Pterygia = involves the cornea and destruction of Bowman’s layer

Pterygia Degeneration Similarities Differences Pathology Pingueculae Fragmented Stromal