Originally Posted by Knotlob

Probably valid, but I don't think you would need to wear the glasses so long.

One of my opticians recommended that I don't put my lenses in, in the morning, until 45 mins after I had gotten up. This was to allow the eyes to replenish the oxygen deficiency during sleep (without lenses in). Of course, not always possible to give 45 mins if in a rush, but sensible advice nonetheless.

knotlob