Peer-reviewed veterinary case report
The use of semiconductor diode laser for deflation and coagulation of anterior uveal cysts in dogs, cats and horses: a report of 20 cases.
- Journal:
- Veterinary ophthalmology
- Year:
- 2004
- Authors:
- Gemensky-Metzler, Anne J et al.
- Affiliation:
- Department of Veterinary Clinical Sciences · United States
Plain-English summary
This study looked at using a special laser to treat anterior uveal cysts, which are fluid-filled sacs in the eye, in dogs, cats, and horses. The researchers treated four dogs, nine horses, and seven cats that had these cysts, which could affect their vision or cause other problems. The treatment involved using the laser to pop and seal the cysts, and it was done with or without general anesthesia depending on the animal. After the procedure, all the animals felt better, showed no significant inflammation, and their unusual behaviors improved. The treatment was effective, and while the cysts did not come back, some new cysts were found in a few cases.
Abstract
OBJECTIVE: To describe semiconductor diode laser use for anterior uveal cyst deflation and coagulation in dogs, horses and cats. ANIMALS STUDIED: The presenting clinical signs, surgical technique and postoperative results for four dogs, nine horses and seven cats with anterior uveal cysts treated with diode laser are described. Treated cysts were of sufficient size and/or number to potentially impair vision, damage the corneal endothelium, or increase intraocular pressure (IOP). One dog with free-floating cysts exhibited 'fly biting' behavior. Cysts were suspected of causing shying on the affected side and/or head-shaking behavior in seven horses. Cysts were free floating within the anterior chamber in dogs, occurred in the corpora nigrum in horses and were attached to the posterior iris surface in cats. In cats, shallowing of the anterior chamber and dyscoria were observed. In all cats prior to cyst deflation, IOP increased after pharmacologic pupil dilation. Cats were more likely than dogs and horses to have bilateral and multiple cysts. PROCEDURE: Two dogs and all horses were treated without general anesthesia and two dogs and all cats were treated under general anesthesia. Diode laser was used to perforate, deflate and coagulate the cysts. RESULTS: Postoperatively, all eyes were free of discomfort or significant inflammation and minimal or no topical or systemic anti-inflammatory therapy was required. Abnormal behavior improved or resolved in all cases. In all cats, IOP 24 h after photocoagulation was lower than the postdilation IOP. Cysts did not recur, but new cysts were discovered in several cases. CONCLUSION: Semiconductor diode laser coagulation of anterior uveal cysts is safe, effective and noninvasive.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/15310297/