According to the Beeb:
Scientists believe they have worked out a formula to calculate how “beer goggles” affect a drinker’s vision.
The drink-fuelled phenomenon is said to transform supposedly “ugly” people into beauties – until the morning after.
There’s even an equation given on the site to calculate your “beer goggles effect.”
A formula rating of less than one means no effect. Between one and 50 the person you would normally find unattractive appears less “visually offensive”.
Non-appealing people become suddenly attractive between 51 and 100. At more than 100, someone not considered attractive looks like a super model.
Now I think that this sounds like utter tripe. So why on earth are researchers at Manchester University wasting time and energy on this sort of rubbish?
The research was commissioned by eyecare firm Bausch & Lomb PureVision.
Aha, all becomes clear.