I wear large scleral lenses daily. they are easier to get in than soft lenses once you get the hang of it, they stay exactly where they're supposed to, breathe/transmit oxygen better than any other lens, and they keep your eye feeling fresh and watered because they maintain a pool of solution between the lens and the eye. I got them last year because I have keratoconus . . . clearest vision I've ever had, even glasses are nothing in comparison. therse are the same lenses that are used professionally for eye color changes and effects in the film and theatre industries, and they're also used for AR technology. They're awesome, I'll never go back to soft lens crap. I can wear these for 14 hours and they'll still feel like I just put them in a minute ago.