AI Article Synopsis
- The study investigated the effectiveness of transscleral cyclophotocoagulation on human eyes using a neodymium:YAG laser and a sapphire-tipped probe, focusing on probe placement and power levels.
- When the probe tip was placed 0.5 to 1.0 mm from the limbus and set at a power range of 5 to 9 watts for 0.7 seconds, significant damage occurred to the ciliary body and its epithelium.
- Higher power (11 watts) caused extensive damage, while placing the probe 1.5 mm posterior to the limbus targeted the pars plana, resulting in less damage compared to limbally placed probes, which harmed the iris and lens but spared the scl
Article Abstract
Transscleral cyclophotocoagulation using a free-running, thermal-mode neodymium:YAG laser with a 2.2-mm-diameter sapphire-tipped contact probe was performed on 27 enucleated human eyes to investigate the effect of probe placement and power levels. We concluded from gross, light, and scanning electron microscopic examinations that a tissue destructive effect on ciliary body and epithelium was produced by positioning the anterior edge of the probe tip 0.5 to 1.0 mm from the visible limbus using a 5- to 9-W power setting for 0.7 second. An 11-W power setting resulted in extensive loss of anatomic integrity of the ciliary body. Limbal probe placement produced significant iris and lens damage while positioning the probe 1.5 mm posterior to the limbus affected primarily pars plana. Damage to the sclera was not observed using this method of cyclophotocoagulation.
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| http://dx.doi.org/10.1001/archopht.1990.01070070124049 | DOI Listing |
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