Again, the sagittal height is a key value in fitting contact lenses in complex cases. The above images clearly show that the more sagittal height, the greater the central clearance. The “sag” value allows the practitioner to have a close control of the intended clearance in every case.
The sagittal height is so valuable that it is now being introduced to soft and hybrid contact lens fittings.
The more information, the better the fit (by precision)
Fitting contact lenses is an art based on science.