Transscleral cyclophotocoagulation of the ciliary body is an effective technique to reduce
intraocular pressure in case of glaucoma. Due to concerns over complications, the main
indications for this second-line treatment are refractory glaucoma medication / surgery and
low visual prognosis. The 2000 milliwatts (mW) for 2 seconds settings are used by the
majority of researchers and clinicians according to the published literature. Some have
proposed using 1250 mW for 4 seconds to improve the use of this medical procedure.
The aim of this study is to determine how different parameters affect the efficacy of the
treatment. This is a prospective double-blinded randomized controlled trial comparing two
groups, the experimental group using 1250 mW for 4 seconds and the control group using 2000
mW for 2 seconds.