The cause of<unk><unk>  degeneration is unknown, its prevalence is roughly equal between males and females, and it usually occurs in the second or third decade of life.
Terrien's marginal degeneration
Hill–Sachs lesion
Limbal nodule
Janeway lesion
Olney's lesions
Hollenhorst plaque
Perthes lesion
Feathery degeneration