Bilateral Terrien’s Marginal Degeneration and Posterior Polymorphous Dystrophy in a Patient with Rheumatoid Arthritis

Purpose: to report an interesting case of concomitant bilateral terrien's marginal degeneration-like corneal ectasia and posterior polymorphous corneal dystrophy in a young man with quiescent rheumatoid arthritis. case report: a 24-year-old man with history of rheumatoid arthritis presented with bilateral decreased vision since four years ago. slit lamp examination revealed bilateral circumferential peripheral corneal thinning and bulging with vascularization and lipid deposition in addition to band-like lesions in descemet's membrane. previous records revealed no gross corneal abnormalities up to 4 years ago. corneal lesions were compatible with bilateral circumferential terrien's marginal degeneration concomitant with posterior polymorphous dystrophy. conclusion: to our knowledge, this is the first report of concomitant bilateral terrien's marginal degeneration with peripheral corneal ectasia and posterior polymorphous dystrophy in a patient with rheumatoid arthritis. bilateral circumferential involvement, younger age at presentation and total peripheral corneal ectasia as observed in this case are not typical for classic terrien's marginal degeneration