[Two cases of posterior keratoconus].

We studied 3 eyes from 2 patients with posterior keratoconus. One patient (a 17-year-old female) had posterior keratoconus bilaterally and the other (a 8-year-old male) had posterior keratoconus in one eye and Peters' anomaly in the contralateral eye. Slit-lamp biomicroscopy disclosed localized thinning with stromal haze underlying the endothelium in the central cornea. Photokeratoscopy revealed no abnormalities suggestive of anterior keratoconus. Wide-field specular microscopy showed the endothelial cells with normal cell density (approximately 3500 cells/mm2) and morphology in both the peripheral and central corneas (adjacent to the hazy areas).