A hospital -based, prospective interventional non comparative case series study.This study will be conducted on patients with refractory glaucoma whose ages are 18 years and older.They will be subjected to Transscleral Diode Laser Cyclophotocoagulation.~Postoperative evaluation will be scheduled for the first day postoperative, then 1 week later and then at 1st, 3rd, month postoperative.
The purpose of this study is to assess the relative effectiveness and safety of diode laser cyclophotocoagulation procedure to reduce IOP and relieve pain in adult patients with refractory glaucoma.