[nerdsniper]

> Permanent lenses had also led to some blood vessel overgrowth due to lack of oxygenation.

FWIW, this no longer appears to be the case. New "extended-wear" contacts have excellent oxygen permeability, and my ophthalmologist hasn't noticed any overgrowth of capillaries/vessels over the past 15 years of me wearing them. You can also sleep in them now, and I find them more comfortable than dailies actually, due to their high permeability.

[atombender]

This is really individual. I tried Air Optix, and I kept waking up with my eyes glued shut from mucus.