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

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

Chapter 220: CYSTS OF THE IRIS AND CORPORA NIGRA.
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About This Book

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.

CYSTS OF THE IRIS AND CORPORA NIGRA.

Mayer speaks of these lesions in horses, but it is very difficult to diagnose them correctly, even with the aid of the ophthalmoscope. The very manifest bulging at the part may be due to excess of pigment, especially in the corpora nigra, and an exploratory puncture would only be warranted when the protrusion became excessive and injurious. One such puncture by Eversbusch led to infection and loss of the eye.