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Cherry eye is a disorder of the nictitating membrane (NM), also called the third eyelid, present in the eyes of dogs and cats. [1] Cherry eye is most often seen in young dogs under the age of two. [ 2 ]
The nictitating membrane of a masked lapwing as it closes over the left eye, originating from the medial canthus. The nictitating membrane (from Latin nictare, to blink) is a transparent or translucent third eyelid present in some animals that can be drawn across the eye from the medial canthus to protect and moisten it while maintaining vision.
It is loose, thus eye movements are not restricted by it. Only one species of primate, the Calabar angwantibo, is known to have a functioning nictitating membrane. [4] With ocular allergies, the lacrimal caruncle and plica semilunaris may be inflamed and pruritic (itchy) due to histamine release in the tissue and tear film.
In domestic dogs in larger kennels, up to three quarters of the animals may be infested. [49] In red foxes in Denmark, a prevalence of 80% was found, making urinary bladder hairworms the most abundant nematode, and foxes a significant natural reservoir of pathogens for infecting dogs. [18] C. plica rarely causes symptoms of disease.
The dog then causes further trauma to the skin by itching and rubbing at the area, leading to a secondary bacterial infection." Acute moist dermatitis: Symptoms A patch of moist, inflamed skin ...
The Harderian gland is a gland found within the eye's orbit that occurs in tetrapods (reptiles, amphibians, birds and mammals) that possess a nictitating membrane. [1] The gland can be compound tubular or compound tubuloalveolar, and the fluid it secretes (mucous, serous or lipid) varies between different groups of animals.
Thelazia is a genus of nematode worms which parasitize the eyes and associated tissues of various bird and mammal hosts, including humans. [2] [3] They are often called "eyeworms", and infestation with Thelazia species is referred to as "thelaziasis" (occasionally spelled "thelaziosis").
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