Purpose. To document an association between Terrien's marginal degeneration
and posterior polymorphous dystrophy. Methods. A 23-year-old Saudi man pre
sented with decreased vision, peripheral corneal thinning with vascularizat
ion and scarring, and abnormalities of the posterior stroma and Descemet's
membrane. Results. Clinical examination, corneal topography, and specular m
icroscopy were consistent with a diagnosis of Terrien's marginal degenerati
on and posterior polymorphous dystrophy. Conclusion. We report the first ca
se, to our knowledge, of the simultaneous occurrence of Terrien's marginal
degeneration with posterior polymorphous dystrophy.