Scientists believe they have worked out a formula to calculate how "beer goggles" affect a drinker's vision.
An = number of units of alcohol consumed
S = smokiness of the room (graded from 0-10, where 0 clear air; 10 extremely smoky)
L = luminance of 'person of interest' (candelas per square metre; typically 1 pitch black; 150 as seen in normal room lighting)
Vo = Snellen visual acuity (6/6 normal; 6/12 just meets driving standard)
d = distance from 'person of interest' (metres; 0.5 to 3 metres)
"For example, someone with normal vision, who has consumed five pints of beer and views a person 1.5 metres away in a fairly smoky and poorly lit room, will score 55, which means they would suffer from a moderate beer goggle effect
The research was commissioned by eyecare firm Bausch & Lomb PureVision.
A poll showed that 68% of people had regretted giving their phone number to someone to whom they later realised they were not attracted.
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.
Haha um did we really need an equation for this?
