Sudden Visual Loss Associated With Sexual Activity

I found the article "Sudden Visual Loss Associated With Sexual Activity" by Friberg et al¹ interesting, as did, apparently, much of the lay press.

In September 1974, the Canadian Journal of Ophthalmology published my article "Ophthalmodynia Hypertonica Copulationis—A New Syndrome?" (1974;9: 484-485) in which acute angle-closure glaucoma attacks seemed to be precipitated by prolonged sexual intercourse, in a prone position, in a darkened room.

First eggs and cheese, then red meat, then white wine, and now sex—are there any safe pleasures left?