Monocular blindness from drusen of the optic disk.

Arcuate scotomas and occasionally severe peripheral constriction of the visual field are familiar sequelae of drusen of the optic disk. Loss of central vision with this disk anomaly is rare and its occurrence always demands additional investigations. It has been a long established rule that monocular blindness cannot be attributed to the progressive neurovascular complications of optic disk dru­ sen. This report documents an exception to this rule.