Non-contact direct selective laser trabeculoplasty: light propagation analysis
Zachary S Sacks1, Masha Dobkin-Bekman1, Noa Geffen2,3
1BELKIN Laser, Ltd., 13 Gan Raveh, POB 13254, Yavne 8122214, Israel.
Biomedical Optics Express
|July 9, 2020
Summary
Non-contact direct selective laser trabeculoplasty (DSLT) delivers less energy to the trabecular meshwork (TM) than traditional SLT. This study quantizes DSLT energy transmission, confirming its efficacy for glaucoma treatment.
Area of Science:
- Ophthalmology
- Biomedical Engineering
- Laser Physics
Background:
- Selective laser trabeculoplasty (SLT) is a standard treatment for glaucoma and ocular hypertension.
- SLT requires direct contact with a gonioscope to target the trabecular meshwork (TM).
- Non-contact direct SLT (DSLT) offers an alternative by targeting the TM through overlying tissues.
Purpose of the Study:
- To analyze the innovative non-contact direct SLT (DSLT) procedure.
- To quantify laser energy transmission to the TM during DSLT using analytical modeling and Monte Carlo simulations.
- To compare DSLT energy delivery with traditional SLT.
Main Methods:
- Analytical modeling was employed to simulate laser energy propagation.
- Monte Carlo simulations were utilized to quantify energy reaching the TM.
- Energy transmission efficiency of DSLT was compared to SLT.
Main Results:
- DSLT energy transmission to the TM is 2.8 times less than SLT.
- This reduced energy delivery is sufficient for effective treatment.
- The findings support the efficacy of non-contact DSLT.
Conclusions:
- Non-contact DSLT is an effective alternative to traditional SLT for glaucoma treatment.
- DSLT achieves therapeutic effects with lower energy delivery to the TM.
- This research validates the biophysical principles underlying DSLT efficacy.
