Objectives: To determine the relationships between corneal and scleral elevation topography in subjects with corneal ectasias and normal corneas.
Objective: To determine repeatability of measurements using the sMap3D™ Corneo-Scleral Topographer in patients presenting for scleral lens fitting.
Because of the extreme central flattening that can occur post-penetrating keratoplasty (PKP), these cases represent a unique scleral lens fitting challenge to optimize central and optical zone clearances.
This case report illustrates the use of the sMap3D™ virtual precision fit software to design a lens to vault over a localized conjunctival/scleral obstacle.
Virtual fitting designed a 5.5D reverse geometry lens with high accuracy in predicted central clearance and peripheral fit, avoiding multiple stepwise changes and remakes, simplifying lens fitting and reducing patient chair time.
This case illustrates that scleral shape rather than size and weight of the lens can sometimes be the major contributing factor to scleral lens decentration.