Sheila Morrison, OD, MS, FSLS, Boaz Schwartz, OD, Greg DeNaeyer, OD, FAAO, Donald Sanders, MD, PhD
Toric haptic scleral lens designs are prescribed more often than in previous years. Recent interest in mapping the sclera and conjunctiva indicates that scleral shape demonstrates interocular and individual variability, which may explain the difficulty in fitting some patients with scleral lenses.
A corneo-scleral topographical system (sMap3D™, Precision Ocular Metrology) was utilized to evaluate two atypical cases, in which both patients had irregular ocular shape that adversely impacted the successful fitting of scleral lenses. In both cases, a custom multi-meridian back surface toric haptic scleral lens was designed to address the atypical scleral shape, which significantly deviated from a Sin2 toric curve with a periodicity of 180°.
Drs. DeNaeyer and Sanders are shareholders in Precision Ocular Metrology, the manufacturer of the sMap3D™ instrument. Dr. Sanders is a shareholder of and Dr. DeNaeyer is a consultant to Visionary Optics.