The patient noted tiny gray flecks drifting across his field of vision a week ago. He’d try to look at them, and they seemed to scatter like a cockroach after you turn on the kitchen light. Weird; annoying even – but the floaters did not seem urgent. That soon changed. Seven days later, he started losing his vision; it felt like a curtain was coming down over his left eye. He was within hours of permanently losing sight in that eye, his retina detaching from the back of his eyeball.