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Updated: Feb 27, 2026

Ultrasound Cyclo Plasty in Eyes with Glaucoma
Published on: January 26, 2018
Urrets-Zavalia Syndrome After Diode Laser Transscleral Cyclophotocoagulation
Geraldo M Vieira1, Fernando J Vieira, Robert Ritch
1*Brasília Glaucoma Center, Brasilia, DF, Brazil †Einhorn Clinical Research Center, New York Eye and Ear Infirmary of Mt. Sinai, New York, NY.
Objective:
To report the occurrence of 5 cases of Urrets-Zavalia syndrome after transscleral diode laser cyclophotocoagulation (TSCPC).
Design:
Retrospective cases series.
Methods:
A review of the charts of 5 patients treated with TSCPC as primary glaucoma surgery who developed Urrets-Zavalia syndrome.
Results:
A total of 8 eyes of 5 patients developed a fixed and dilated pupil after TSCPC, unresponsive to light. A mydriatic pupil could still be observed at least 6 months after treatment in 7 of 8 eyes; however, it was asymptomatic.
Conclusions:
Urrets-Zavalia syndrome is a possible complication of TSCPC, as well as of other 360-degree thermal laser procedures.

