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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Cherry eye ： ウィキペディア英語版 Cherry eye Cherry eye is a disorder of the nictitating membrane (NM), also called the third eyelid, present in the eyes of dogs and cats.〔Gelatt, K. N. (2000). ''Essentials of Veterinary Ophthalmology''. Baltimore: Lippincott Williams & Wilkins.〕 Cherry eye is most often seen in young dogs under the age of two.〔Gelatt, K. N. (2001). ''Color Atlas of Veterinary Ophthalmology''. Baltimore: Lippincott Williams & Wilkins.〕 Common misnomers include adenitis, hyperplasia, adenoma of the gland of the third eyelid; however, cherry eye is not caused by hyperplasia, neoplasia, or primary inflammation.〔Slatter, D. (2001). ''Fundamentals of Veterinary Ophthalmology'': Third Edition. Philadelphia: W.B. Saunders Company.〕 In many species, the third eyelid plays an essential role in vision by supplying oxygen and nutrients to the eye via tear production.〔Robledo, E. P., Serrano, R. D., Sanches, N. Q., & Ramirez, A. M. (n.d.). "(Effect of Pet Vision in a Canine with Keratoconjunctivitis Sicca (Dry Eye) )". Retrieved 1 December 2012.〕 Normally, the gland can evert without detachment.〔 Cherry eye results from a defect in the retinaculum which is responsible for anchoring the gland to the periorbita. This defect causes the gland to prolapse and protrude from the eye as a red fleshy mass.〔 Problems arise as sensitive tissue dries out and is subjected to external trauma〔 Exposure of the tissue often results in secondary inflammation, swelling, or infection.〔 If left untreated, this condition can lead to Keratoconjunctivitis sicca (KCS) and other complications.〔 ==Description== Cherry eye is most common in young dogs, especially breeds such as Cavalier King Charles Spaniel, English Bulldog, Lhasa Apso, Shih Tzu, West Highland White Terrier, Pug, Bloodhound, American Cocker Spaniel, and Boston Terrier〔 Cherry eye is rare in felines, but can occur. This defect is most common in the Burmese breed of felines.〔Griffin, C., & Glaze, M. B. (2008). "Eyes and Ears". St John U.S.V.I. November 3–6. International Veterinary Seminars.〕 A similar condition exists in dwarf lop-eared rabbits, which occurs in the harderian gland. Similar surgical treatment is necessary.〔 Cherry eye is not considered a genetic problem, as no proof of inheritance have been determined.〔Christmas, R. E. (1992).But Some breeds are considered to be more susceptible to its development than others, including the Bulldog, Boston Terrier, Bull Terrier, Lhasa Apso, Cocker Spaniel, St. Bernard, Shar-pei, Shih Tzu and Poodle "Common Ocular Problems of Shih Tzu Dogs". ''Canadian Veterinary Journal'', Volume 33, 392.〕 The NM contains many glands which merge and appear as a single gland.〔Sarma, B. (2010). "Cherry Eye in Dogs. ''Intas Polivet'', 11, pp. 80–81.〕 Typically, glands secrete tears for lubrication of the cornea.〔 Lack of anchoring allows gland to flip up, causing the gland to prolapse. Symptoms include a visible fleshy mass, abnormal tear production, and a discharge or drainage from the eye. Cherry eye is typically diagnosed by examination of the conjunctiva and nictitating membrane.〔 The most obvious symptom of cherry eye is a round fleshy mass through medial canthus of the eye, similar in appearance to the fruit it is named for.〔 This mass may be unilateral or ‘’bilateral’’. Both eyes may develop cherry eye at different times in the animal’s life.〔 Other symptoms of cherry eye include drainage from the eye and abnormal tear production. Initially, cherry eye results in overproduction of tears, but eventually changes to unsubstantial tear production.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cherry eye」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.