This was in the November, 1998, issue of mini-Annals of Improbable Research. Investigator David Singmaster again invites controversy:

In the recent Mini-AIR was a question about the relation of Viagra use and blindness. My university includes a large hospitality and catering department which used to be the National College of Baking. I conjectured that prolonged exposure to flour dust could well cause glaucoma and planned to publish a paper on it: “Master Baking Makes you Blind.”