fluid for filling sclerals??

[Bonnie]

I started using just preser. free saline...couldn't keep it in my fenerated scleral, although the vision was sharpest with just saline...tried systane..but that was a little too viscous (vision diminished ) now I'm using celluvisc, but again..the vision is not as sharp as it should be...any suggestions on something you've used that was preservative free besides the above??
I got my scleral lens from my eye dr..and it is great..only costed $400..from what I'm reading, that's a good price.