Open AccessNon-contact direct selective laser trabeculoplasty: light propagation analysis
Author(s) -
Zachary S. Sacks,
Masha Dobkin-Bekman,
Noa Geffen,
Mordechai Goldenfeld,
Michael Belkin
Publication year - 2020
Publication title -
biomedical optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.390849
Subject(s) - cornea , trabecular meshwork , laser , glaucoma , optics , monte carlo method , materials science , ophthalmology , biomedical engineering , medicine , physics , mathematics , statistics
Selective laser trabeculoplasty (SLT), used to treat glaucoma and ocular hypertension, requires the use of a gonioscope placed on the cornea to visualize and irradiate the trabecular meshwork (TM). Alternatively, non-contact direct SLT (DSLT) irradiates the TM through the overlying tissues. Here we analyze this innovative procedure using analytical modeling and Monte Carlo simulations to quantify the laser energy reaching the TM through the overlying tissues. Compared with energy launched from the laser, DSLT energy transmission to the TM is 2.8 times less than SLT, which verifies the efficacy of non-contact DSLT given the lowest reported effective SLT energies.