The downloadable items below have been created by the Vision Research Institute for educational purposes and are designed to assist clinicians in practice. Click on the card below that you wish to download and print. If you prefer to have a hard copy (8.5" x 11") card sent to you, please email (CraigNorman@ferris.edu or ChadRosen@ferris.edu) with the request and it will be sent to you immediately.
The Scleral Lens Fit Scales demonstrate how to correctly estimate the clearance (amount of tears underneath portions of a lens, measured in microns) by comparing the tear layer thickness to the center thickness of the lens. Optic sections demonstrate the tear thickness underneath the lens both centrally and at the limbal area. Also shown are various edge clearances.