Introduction to scleral lenses Sept. 09, 2015 Overview إظهار النسخة النصية Overview Muriel M. Schornack, O.D., Ophthalmology, provides an introduction to scleral lenses: Large-diameter, rigid, gas-permeable contact lenses that rest on the sclera and trap a layer of fluid between the back of the lens and the front of the cornea. Scleral lenses provide unique fitting and optical characteristics. VID-20433347 المتخصصون في المجالات الطبية Introduction to Scleral Lenses