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Research Article

Open Vet J. 2023; 13(9): 1167-1174

Topical 1% cyclosporine eyedrops for the treatment of crystalline corneal dystrophy in dogs

Manuela Crasta, Kevin Arteaga, Teresa Peña, Marta Leiva.

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Crystalline corneal dystrophy (CCD) is the most common type of corneal lipidic deposition in dogs. CCD is a primary metabolic disorder of the corneal fibroblast featuring an accumulation of extracellular and intracellular lipid deposits. Corneal lipid deposits create a corneal opacity and modify the interfibrillar collagen distance, inducing light scattering. Corneal vascularization is not usually associated with the disease, but, in case of chronicity, cell death may produce inflammation and new corneal vessels are developed. To the best of the authors’ knowledge, this is the first report of a medical approach for CCD treatment in veterinary medicine.
To evaluate the efficacy of topical 1% cyclosporine eyedrops (1% CsA) for the treatment of CCD in dogs.
Medical records of dogs with CCD were retrospectively reviewed (2009-2020). Corneal opacification description (COD) [size (mm), depth, and opacification degree (0-3)] was evaluated at 0, 3, 6, 9, 12, and 15 months post-initial diagnosis. Dogs were classified into three groups: control group (G0), group receiving topical 1% CsA once per day (G1) and group receiving topical 1% CsA twice daily (G2).
Ninety-two client-owned dogs (163 eyes) of different breeds, age and gender fulfilled the inclusion criteria. When compared to G0, where the eyes significantly increased COD (p

Key words: Cornea, Cyclosporine, Deposits, Dog, Dystrophy

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