Bull's eye maculopathy in an HIV-positive patient receiving ritonavir.

Retinal toxicity involving the macula as a complication of the antiretroviral protease inhibitor ritonavir has been described in a few cases. We report retinal pigment epitheliopathy involving the macula with a bull's eye pattern in a 36-year-old man with well-controlled HIV receiving ritonavir with gradually progressive bilateral vision loss.

Delayed infection with Parvimonas micra following spinal instrumentation.

Background Context: Delayed-onset surgical site infections following spinal instrumentation are uncommon and often present with chronic pain and implant failure. Anaerobic organisms are rarely implicated and identified with difficulty in these infections.

Purpose: We report a case of vertebral osteomyelitis and epidural abscess due to Parvimonas micra, an anaerobic bacterium, six months following spinal instrumentation.