Helpful reference information
Here are some conversion charts and fitting tools
While not common, corneal edema may occur in some patients.
A lens with too much vaults can cause this. Make sure to re-evaluate your SAG value. It should be the minimum SAG that vaults with very little or preferably no apical bearing (100-150 microns after settling).
Another cause may be that the periphery of the lens is impinging into the conjunctiva. If this occurs flattening the PC’s while maintaining the appropriate SAG is indicated. Lens awareness can occur if there is too much edge lift. Excessive edge lift is caused by either the PC’s being too flat or the lens SAG being too low. If excessive edge lift is observed you should first determine if the SAG is appropriate. Often when the SAG is increased, the edge will improve.