SECTION II. 
DISEASES OF THE EYE. 
#mauRosis, or GLass Eye (Gutta SeRENA)—ForEIGN BopiEs WITHIN THE Erp 
LID8——SPECKS, OR FitM ON THE EYE, KNOWN as Opacity oF THE CORNEA— 
Cararact—WoRM IN THE EYE—OPHTHALMIA—TREATMENT OF INFLAMMATION— 
PuacLent OPHTHALMIA—SPECIFIC OPHTHALMIA. 
Amavrosis (“Giass EYE”—Gutra SERENA.) 
MAUROSIS is known to most men as “ glass eye.” Physi- 
cians, however, have named the disease gutta serena. The 
abnormal condition, which consists in dilatation of the pupil, un- 
influenced by light or darkness, is occasioned by paralysis of the 
optic nerve and its ultimate expansion. 
Cuuses.—Some horses, of an excitable, nervous temperament, 
often become the subjects of dilated pupil, without any assignable 
cause ; while that form of amaurosis occurring among plethoric 
subjects, or those whose digestive organs are deranged or occupied 
by a large quantity of undigested food, (they, the subjects border- 
ing on that state known as stomach staggers,) can easily be ex- 
plained on the well-known law of sympathy. 
We may, however, with propriety, assign a cause for its occur: 
rence in the eyes of nervous, excitable horses; for this very con: 
dition of the nervous system, which gives rise to the excitability, 
perhaps goes to show that the brain is actually diseased, either in 
function or structure. Animals subject to this affection are gen- 
erally of a “bony,” spare, muscular development, and have wiry 
sinews, thin tapering ears, delicate lips and nostrils, diminution 
in the quantity of the hair in the mane and tail, but remarkable 
for compactness of texture. We generally find, under ordinary 
circumstances, the black color preponderates in nervous horses 
over the various shades of equine coloring-matter found in the 
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