Surgeon Constant

To enter a Surgeon Constant (SRG) for a Lens, MAIN MENU -> PROGRAM & SURGEON SETUP -> SURGEON LENS SETUP tab : select surgeon, select lens in Active Lens List, and then click ENTER CONSTANT.

It is not recommended to edit the Manufacturer's (MFG) constant because SRG takes precedence over MFG and data in "VIEWE/EDIT LENS PROPERTIES" should be what the manufacturer has published and changing it would create a "lie". And since SRG takes precedence, there is no need to.