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Text book of veterinary medicine, Volume 3 (of 5) cover

Text book of veterinary medicine, Volume 3 (of 5)

Chapter 231: PERSISTENT ARTERIA HYALOIDEA.
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Comprehensive clinical manual detailing disorders of the nervous, genitourinary, ocular, and integumentary systems in domestic animals. It begins with principles of neural control and general symptomatology, classifying motor, sensory, and psychic disturbances and methods for localizing lesions. The text describes specific conditions such as seizures, paralysis, meningitis, intracranial hemorrhage, tumors, and toxicoses, and outlines diagnostic signs and pathological causes. Later sections address urine analysis and renal disease, urinary tract inflammation and calculi, and diseases of the eye, skin, and constitutional systems, combining pathological description with clinical signs, differential diagnosis, and practical guidance for examination and interpretation.

PERSISTENT ARTERIA HYALOIDEA.

In the embryo this artery occupies the central canal of the vitreous and extends from the optic papilla to the posterior pole of the lens. At times it persists after birth and even to mature life and is then detected as a gray or dark thread on ophthalmoscopic examination. Berlin records a case in an old horse and others in young cats, and Möller other cases in dogs. Treatment is manifestly hopeless.