Delayed onset of bilateral acute retinal necrosis syndrome: a 34-year interval.

The case is described of a male patient who had a history of acute retinal necrosis (ARN) OS at age 13 years. The eye subsequently had an inoperable retinal detachment with residual light perception visual acuity. After a 34-year disease-free interval, ARN developed OD that responded to medical treatment. This case represents the longest reported interval of ARN quiescence with eventual bilateral involvement and illustrates the importance of long-term patient follow-up.