When contacts stop working (Score 1)

For computer use, use the most breathable lenses you can find that work for your astigmatism. For me that was gas perm lenses, extended wear even. However be prepared to have to find another solution eventually. They worked for 10+ years until I started having constant fogging problems in less than a day of wear. The 3rd doc I went to (first two just sort of looked puzzled) said that its not uncommon for people to actually develop an allergy to the plastic used for contact lenses after 10 or 20 years - I can't say whether he was only referring to gas perms or any lens. The allergy tends to manifest itself as early protein deposits and "gook" (yes thats a technical term) in the eyes well before it should be there. For me, I wore extended wear gas perms (good for a week before removal) and was having gook problems in less than a day. I ended up going for Lasik because it took care of the contacts problem, and kept me out of the strangely distorted visual world of glasses. Make you're own call if the time comes that you're coveted lenses no longer work for you.