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Keratoconjunctivitis sicca is the major cause of chronic or recurrent conjunctivitis in dogs. The diagnosis of KCS is often delayed or mistaken for allergic or bacterial conjunctivitis and inappropriate or insufficient treatment leads to progressive corneal scarring and blindness in many dogs. The cause of KCS in dogs has not been proven, but evidence(More)
Thirty-six sequential cases of canine keratoconjunctivitis sicca (KCS) were treated with ophthalmic cyclosporine. The effects of topical cyclosporine were twofold: (1) cyclosporine increased tear production by 5 mm/min or greater in all cases of spontaneous KCS having an initial Schirmer's Tear Test value greater than 2 mm/min and in 59% of eyes with an(More)
Forty nictitating membrane glands and 9 main lacrimal glands were obtained for histologic evaluation from 28 dogs with keratoconjunctivitis sicca as the result of azosulfapyridine toxicity, canine distemper, multisystemic autoimmune disease (Sjögren's syndrome-like syndrome), congenital origin, and unilateral and bilateral idiopathic keratoconjunctivitis(More)
Excision of a prolapsed gland of the third eyelid predisposes a dog to develop keratoconjunctivitis sicca later in its lifetime, and replacement, rather than excision, of the gland is the preferred method of treatment. One method of gland replacement involves suturing the prolapsed gland to the periosteum of the ventral orbital rim. As originally described,(More)
Our aims were to separate and characterize secreted canine ocular mucins, and to provide definitive evidence of membrane-bound mucins at the canine ocular surface. Mucus was collected by suction from the ocular surface of normal dogs and dispersed in guanidine hydrochloride and a cocktail of protease inhibitors. Caesium chloride density gradient(More)
This study examines the canine model of keratoconjunctivitis sicca (KCS, 'dry eye') in order to establish the biochemical basis of altered ocular mucin secretion in this condition. It follows a previous examination of ocular mucins in the normal dog. Mucus was collected by suction from the ocular surface of dogs with KCS, and dispersed in guanidine(More)
The transcorneal penetration of cyclosporine A has been determined from each of three vehicles across isolated cornea into simulated aqueous humor containing either 50 mg % protein (0.5 mg/ml; as found in a normal eye) or 5000 mg % protein (50 mg/ml; as found in an inflamed eye). Cyclosporine entered the corneal epithelium and stroma/endothelium as well as(More)
The effects of dihydrotestosterone (DHT) (1 mg/kg) on biochemical parameters related to lacrimal secretion, basal tear flow rate, and pilocarpine-stimulated lacrimal gland fluid secretion, in mature ovariectomized rabbits were studied. The effects of the synthetic estrogen diethylstilbestrol (DES) (100 micrograms/kg), on lacrimal gland biochemical(More)