Retinal Sparing by Selective Retinal Pigment Epithelial Photocoagulation

Johann Roider
1999 Archives of Ophthalmology  
Objective: To investigate whether photocoagulation of the retinal pigment epithelium is possible with sparing of the photoreceptors. Methods: Mild laser effects of a neodymium:yttriumlithium-fluoride (Nd:YLF) laser (527 nm) were applied to 17 patients. To establish the necessary energy, test exposures were performed to the lower macula (laser variables: 1.7 microseconds, 100 and 500 pulses applied in a train at 500 Hz, 20-130 µJ, 160 µm). Of 179 test lesions, 73 were followed up at various time
more » ... intervals up to 1 year by performing microperimetry directly on top of the laser lesions. Results: All of the test lesions were at the threshold of retinal pigment epithelial disruption, and none of the laser effects were visible by ophthalmoscopy during pho-CLINICAL SCIENCES
doi:10.1001/archopht.117.8.1028 pmid:10448745 fatcat:3z443ngh7ranrfszutliy747vm