Patients awaiting corneal transplantation were tested for visual potential using retinal interference fringe patterns produced by low energy heliumneon laser. Preoperative and postoperative Snellen acuities and laser interferometer acuities were compared. Preoperatively, 13 or 14 patients showed potential for improved vision. Four patients achieved better than predicted vision, three achieved predicted vision, and seven failed to achieve predicted vision. Of those who failed to achieve predicted acuity, four patients were rejecting their corneal graft, one had a dense cataract following corneal transplantation, and two had associated retinal disease. The theory and technique of the examination are discussed, as is the present applicability to clinical practice.
Gstalder RJ, Green DG. Laser Interferometry in Corneal OpacificationPreoperative Visual Potential Estimation. Arch Ophthalmol. 1972;87(3):269-274. doi:10.1001/archopht.1972.01000020271006