Semiconductor diode laser transscleral cyclophotocoagulation for the treatment of glaucoma in horses: a retrospective study of 42 eyes.
Abstract: To evaluate the outcome of diode laser transscleral cyclophotocoagulation (TSCP) for the treatment of glaucoma in horses. Methods: Medical records at The Ohio State University were reviewed. All horses that underwent diode laser TSCP between the years of 1995 and 2007 were included. Preoperative, procedural and clinical follow-up data were collected, and telephone follow-up was performed. Results: Forty-two eyes of 36 horses were included. Twenty-four hours prior to surgery mean intraocular pressure (IOP) was 37.17 + or - 13.48 mmHg (42 eyes). Forty-one of 42 eyes (98%) were sighted and 39 of 39 (100%) of eyes were receiving topical glaucoma medication. At 3-5 weeks postoperatively the average IOP was 19.36 + or - 12.04 mmHg (22 eyes). IOP remained significantly lower than pretreatment values at all periods of clinical follow-up (P < 0.05). There was no significant difference in vision outcome, or the requirement for topical glaucoma medication relative to pretreatment values at any follow-up period. Hyphema in 5 of 42 eyes was the only complication noted. Of the 27 eyes seen for clinical follow-up, 2 were enucleated because of refractory elevation of IOP. Mean telephone follow-up was 49 months. Twenty-one of 22 owners contacted (95%) reported that the treatment had been of value, 14 of 22 eyes (64%) were receiving topical glaucoma medication, and 13 of 22 eyes (59%) were considered sighted. Conclusions: Diode laser TSCP aided in the control of IOP and maintenance of vision but did not eliminate the need for topical glaucoma medication during the period of clinical follow-up.
Publication Date: 2010-05-27 PubMed ID: 20500721DOI: 10.1111/j.1463-5224.2010.00779.xGoogle Scholar: Lookup
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- Journal Article
Summary
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This research assessed the effectiveness of treating glaucoma in horses using a semiconductor diode laser through a process called transscleral cyclophotocoagulation (TSCP), and it reports that this treatment helps to control intraocular pressure (IOP) and maintain vision, but does not eliminate the need for topical glaucoma medication.
Objective and Methods
- The objective of this research was to evaluate the outcomes of diode laser transscleral cyclophotocoagulation (TSCP), a treatment methodology for glaucoma in horses.
- To conduct this retrospective study, the researchers reviewed the medical records of the Ohio State University between 1995 and 2007.
- They included all horses that underwent diode laser TSCP during these years into their study.
- They collected preoperative data, procedural details, and clinical follow-up data.
- A telephonic follow-up was also conducted to gather additional data.
Results
- The medical records of forty-two eyes of thirty-six horses were studied.
- Prior to the surgical procedure, the mean intraocular pressure (IOP) was found to be 37.17 mmHg.
- Out of the studied eyes, 41 (98%) were sighted and 39 (100%) were receiving topical glaucoma medications.
- Postoperative evaluations conducted 3-5 weeks after the procedure showed an average IOP of 19.36 mmHg, indicating a significant reduction in IOP.
- However, there was no significant change noticed in the vision outcomes or the requirement for topical glaucoma medication postoperatively.
- Minor complications, such as hyphema, were observed in 5 eyes out of the total studied sample.
- Of the 27 eyes observed during the clinical follow-up, 2 had to be removed owing to an unmanageable increase in IOP.
- The average telephonic follow-up was conducted 49 months post operation, during which, 21 out of 22 owners (95%) reported that they found value from the treatment procedure.
Conclusions
- The research found that diode laser TSCP effectively aids in reducing IOP and helps in maintaining the vision in horses.
- However, it was noted that this procedure did not eliminate the need for topical glaucoma medications during the entire period of clinical follow-up.
Cite This Article
APA
Annear MJ, Wilkie DA, Gemensky-Metzler AJ.
(2010).
Semiconductor diode laser transscleral cyclophotocoagulation for the treatment of glaucoma in horses: a retrospective study of 42 eyes.
Vet Ophthalmol, 13(3), 204-209.
https://doi.org/10.1111/j.1463-5224.2010.00779.x Publication
Researcher Affiliations
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA.
MeSH Terms
- Animals
- Female
- Follow-Up Studies
- Glaucoma / surgery
- Glaucoma / veterinary
- Horse Diseases / surgery
- Horses
- Intraocular Pressure
- Lasers, Semiconductor
- Light Coagulation / instrumentation
- Light Coagulation / methods
- Light Coagulation / veterinary
- Male
- Retrospective Studies
- Treatment Outcome
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