A 31-year-old man with vitritis, chorioretinitis, and hydrocephalus.

The patient was in his usual state of excellent health preceding the episode. He reported mild pressure in the affected eye along with a constant, bilateral, temporal headache that may have predated the blurred vision. The headache was readily relieved by acetaminophen. He denied flashes, photosensitivity, or other visual aberrations. He maintained that his vision was “weaker” on the right at baseline. On further questioning, he felt that his symptom was best characterized as “many floaters” in the right eye. He believed he may have been exposed to a toxic chemical at his workplace 2 months prior to this presentation.