• A simple and inexpensive technique for enhancing the visibility of corneal endothelial cells in specular reflection biomicroscopy involves the insertion of a circular polarizer in front of the patient's eye, intersecting both the incident and reflected light beams. This filter significantly reduces the glare from the epithelium and enables more comfortable and clearer viewing of the endothelial cells.
Peli E. Circular Polarizers Enhance Visibility of Endothelium in Specular Reflection Biomicroscopy. Arch Ophthalmol. 1985;103(5):670–672. doi:10.1001/archopht.1985.01050050062018
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