Peer-reviewed veterinary case report
Cat with glaucoma treated by Ahmed valve and collagen implant
By Park, Kang-Hyo et al.·Published in Veterinary ophthalmology·2018·Department of Veterinary Surgery, South Korea·View original on PubMed →
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Original publication title: Ahmed glaucoma valve implantation with OlogenCollagen Matrix for the surgical treatment of feline glaucoma.
- Species:
- cat
Plain-English summary
A 5-year-old Russian Blue cat was experiencing severe eye problems, including redness and an enlarged pupil in the left eye, due to uncontrolled glaucoma. Despite trying medication that didn't lower the eye pressure, the cat still had some vision left. The veterinarian performed surgery to implant an Ahmed valve, using a special collagen matrix to help prevent scarring around the valve. After the surgery, the eye pressure stabilized, and the cat retained its vision for at least seven months without needing further medication.
People also search for: cat glaucoma treatment · Russian Blue eye problems · Ahmed valve surgery for cats · cat eye pressure management
Abstract
An Ahmed valve implantation with an OlogenCollagen Matrix (OlogenCM, Aeon Astron, Leiden, the Netherlands) was performed for the treatment of uncontrolled glaucoma in a cat. This cat was a 5-year-old castrated Russian Blue male with a 12-week history of conjunctival hyperemia and mydriasis of the left eye. During the ophthalmic examination, the intraocular pressure (IOP) oculus sinister (OS) was 52 mmHg, and a narrow iridocorneal angle (ICA) was detected by gonioscopy. Medical treatment with Cosopt(2% dorzolamide and 0.5% timolol) failed to decrease the IOP. The left eye still had vision, and an Ahmed valve implantation was performed. During the gonioimplantation, OlogenCM was used to inhibit scar formation around the valve. Following the operation, the IOP was stable at an approximate average of 15 mmHg during the 7-month follow-up period, and vision in the left eye was retained without medication. An adequate subconjunctival filtering bleb was formed after 140 days. This is the first case report in which an Ahmed valve gonioimplant with an OlogenCM has been used for the surgical treatment of glaucoma in a cat.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/27539152/