Bietti's tapetoretinal degeneration with marginal corneal dystrophy (crystalline retinopathy): case report.

A patient with Bietti's tapetoretinal degeneration and marginal corneal dystrophy is reported on. Refractile deposits found in both the retina and cornea are the most striking feature of this condition. Apart from a slight reduction in left visual acuity there were no visual symptoms. The dark adapted electroretinogram was abnormal. No metabolic disturbance was detected.