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Cataracts and the Japanese Chin
Cataracts are relatively common in Japanese Chin and most are hereditary. An ACVO-certified
veterinarian can easily detect these cataracts. Haziness or cloudiness in the eyes in older animals is
often not cataracts. Hereditary cataracts can be found in many breeds of dogs and can be detected
early in age, so all Japanese Chin breeding stock should be screened for cataracts before being bred.

Cataracts may be stable or progressive. In the former case, owners may never be aware that their
Japanese Chin has cataracts until or unless the dog is examined. In the latter case, the Japanese Chin
often adapts very well to the gradual loss in vision until a certain point is reached. General diagnosis
can be done by ophthalmoscopic examination; if a more detailed examination is needed, a slit lamp
examination must be performed.

Surgery is the only option for cataracts that seriously impair vision. Most surgery involves removal of
the lens; implants are not typically done. Recovery and prognosis for these dogs are generally good.
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