When I started going to a different ophthalmologist, she asked me if I'd like to switch to daily lenses instead of the lenses I used for years that I switched out every 2 weeks. I'd been having weird issues where my long lasting lenses would be irritating my eyes and drying them out even while using them as instructed and disposing of them religiously after every 2 weeks. I decided to give these a shot, since they were maybe $20 more expensive than my old brand for a year supply (which I also had to buy solution with so it actually evens out). They were a little difficult to get used to since the lenses are much thinner and more malleable, but after a few weeks this wasn't an issue at all. I absolutely love wearing these lenses now! I never have issues with my eyes being irritated, or having weird blurry spots in my lens in the middle of the day when I can't change it out. I typically wear them for over 15 hours every day, since I'm in graduate school and spend a ton of time at school and studying each day. They've not once failed me. It is so great to never have to worry about my eyes being irritated or vision becoming blurry throughout the day.