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Eye problems are a concern within the breed, which has a higher incidence of primary lens luxation (PLL) than most other breeds. [9] The Chinese Crested Dog can also have at least two forms of progressive retinal atrophy (PRA) which can eventually lead to blindness as well. For PLL and one of the forms of PRA, a genetic test can be performed to ...
Diabetes, for example, is the leading cause of new cases of blindness in those aged 20–74, with ocular manifestations such as diabetic retinopathy and macular edema affecting up to 80% of those who have had the disease for 15 years or more.
In the elderly, arcus senilis is a benign condition that does not require treatment. The presence of an arcus senilis in males under the age of 50 may represent a risk factor for cardiovascular disease, [6] and these individuals should be screened for an underlying lipid disorder. The opaque ring in the cornea does not resolve with treatment of ...
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Toxoplasma chorioretinitis, more simply known as ocular toxoplasmosis, is possibly the most common cause of infections in the back of the eye (posterior segment) worldwide. The causitive agent is Toxoplasma gondii, and in the United States, most cases are acquired congenitally. The most common symptom is decreased visual acuity in one eye.
Pseudoexfoliation syndrome, often abbreviated as PEX [1] and sometimes as PES or PXS, is an aging-related systemic disease manifesting itself primarily in the eyes which is characterized by the accumulation of microscopic granular amyloid-like protein fibers. [2]
An aging-associated disease (commonly termed age-related disease, ARD) is a disease that is most often seen with increasing frequency with increasing senescence. They are essentially complications of senescence, distinguished from the aging process itself because all adult animals age ( with rare exceptions ) but not all adult animals ...
The latter often has poor pigment and light eyes. Albino Pekingese (white with pink eyes) should not be bred due to health problems associated with albinism. [citation needed] A black mask or a self-colored face is equally acceptable in show dogs. Regardless of coat color, the exposed skin of the muzzle, nose, lips and eye rims is black. [3]