A family of three, exposed chronically to high levels of carbon monoxide in their home, was hospitalized with nonspecific symptoms and physical findings limited to the eyes. Papilledema, retinal hemorrhages, and cotton wool exudates, all believed to reflect tissue ischemia, resolved spontaneously.
Bilchik RC, Muller-Bergh HA, Freshman ME. Ischemic Retinopathy Due to Carbon Monoxide Poisoning. Arch Ophthalmol. 1971;86(2):142-144. doi:10.1001/archopht.1971.01000010144005