In 1986 I had a scleral lens made for my left eye, I had a mould taken and the lens was made of PMMA with holes to allow the passage of oxygen. I found it uncomfortable so only used to wear it if I went swimming. Last year it was decided that I should try sclerals again as it was becoming impossible to fit me with corneal lenses. This time I didn't have to have a mould taken the lenses were "off the shelf" so to speak and are RGP, I have a large one for my left eye and a mini scleral for the right eye. I wear them for about 15 hours a day with few problems, I can even wear the PMMA one comfortably now so I alternate the left eye lenses. I use Miraflow or Boston cleaner, normal saline for rinsing and Amidose for inserting the lenses, I also use Quattro with the PMMA lens because although I don't need to fill it with saline to put it in it has to be wet, I store all of them dry. The Quattro is also used on my corneal lenses which I usually wear for about an hour in the mornings when I get up. If my eyes feel dry I use Systane to refresh them and I also use it when I remove my lenses at night.
The only real problem I have encountered with the sclerals is air bubbles, sometimes I will spend about ten minutes putting the lenses in another time they go in no problem at all.
Lesley.
Live long and Prosper.