I have the original Acuvue extended wear, disposable lenses. However, I use them as daily wear and always take them out at night, unless I fall asleep accidentally. Because of that, if I try and sleep in them while BPing, my eyes get very irritated within a few days. I try and make sure my hands are very clean when handling them, but last year on the JMT, my eyes got scratchy and dry, so I had to just wear my glasses jnstead of contacts for the last half of the trip.
Since I then couldn't wear sunglasses, my eyes were still a little sore despite my wide-brimmed hat. So now I have chosen to get an Rx set of prescription sun glasses. I am toying with the idea of just leaving the contacts at home for my next trip, which is the southern portion of the PCT. I can anticipate that the desert climate, sand, etc won't work well for handling contacts every morning and night. Not to mention the early starts, and I am NOT a good early-morning person!
So any thoughts on my plan for the desert? Trade off is by wearing contacts, I can wear non-Rx sunglasses, that wrap-around more and thus have better sun protection. But with contacts, I risk, infection, etc that would force me into regular glasses, not sunglasses. I don't want to carry contacts and stuff, eyeglasses, sunglasses and Rx sunglasses to cover it all. So right now, again, my plan is one pair of Rx glasses with transitions lenses so I have clear and dark, polarized lenses in one frame.