Combined cycloablation and gonioimplantation for treatment of glaucoma in dogs: 18 cases (1992-1998).
OBJECTIVE
To evaluate a combined cycloablative and gonioimplantation technique for treatment of glaucoma in dogs.


METHODS
Retrospective study.


METHODS
18 adult dogs with glaucoma.


METHODS
Medical records of dogs that received a valved gonioimplant and a cyclodestructive procedure (cyclocryoablation or diode laser cyclophotocoagulation) during a 6-year period were reviewed. Retention of vision and intraocular pressure control were assessed, as well as number and nature of complications.


RESULTS
19 eyes of 18 dogs received a valved gonioimplant and either cyclocryoablation (n = 12) or diode laser cyclophotocoagulation (7). At > or = 1 year after surgery, 11 of 19 eyes had vision and 14 of 19 eyes had intraocular pressure < 25 mm Hg. Two dogs (2 eyes) were lost to follow-up 3 and 6 months after surgery. Despite the alternative route for aqueous humor flow created by the gonioimplant, 7 eyes had increased intraocular pressure (27 to 61 mm Hg) < 24 hours after surgery. Other complications included excessive intraocular fibrin, focal retinal detachment, corneal ulcer, retinal hemorrhage, cataract, and implant migration.


CONCLUSIONS
Combined cycloablation and gonioimplantation appears to be a promising technique for retention of vision and control of intraocular pressure in dogs with glaucoma.
Bentley
E
E
Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison 53706-1102, USA.
Miller
P E
PE
Murphy
C J
CJ
Schoster
J V
JV
D000818:Animals; D000867:Anterior Chamber / Q000601:surgery; D003452:Cryosurgery / Q000662:veterinary*; D004283:Dog Diseases / Q000188:drug therapy / Q000601:surgery*; D004285:Dogs; D005260:Female; D005500:Follow-Up Studies; D005901:Glaucoma / Q000188:drug therapy / Q000601:surgery / Q000662:veterinary*; D020327:Glaucoma Drainage Implants / Q000662:veterinary*; D007429:Intraocular Pressure; D008028:Light Coagulation / Q000662:veterinary*; D008297:Male; D011183:Postoperative Complications / Q000662:veterinary; D012189:Retrospective Studies; D014785:Vision, Ocular