. Diseases of the dog and their treatment. ed byfever or other phenomena. These spots may vary from complete DISEASES OF THE CORNEA 415 opacity of the cornea to cloud-like spots, dull white, chalky white,or pigmented (Fig. 141). Calomel blown on the cornea by meansof a small cylinder of paper or a quill, salves, such as calomel1 part and petroleum salve 4 parts; a piece the size of a pea is puton the cornea and the lid gently massaged for several minutes. Calo-mel and sugar of milk, equal parts, is also used; a small portion is put onthe eye by means of a camels hair pencil, and the lid is gen
. Diseases of the dog and their treatment. ed byfever or other phenomena. These spots may vary from complete DISEASES OF THE CORNEA 415 opacity of the cornea to cloud-like spots, dull white, chalky white,or pigmented (Fig. 141). Calomel blown on the cornea by meansof a small cylinder of paper or a quill, salves, such as calomel1 part and petroleum salve 4 parts; a piece the size of a pea is puton the cornea and the lid gently massaged for several minutes. Calo-mel and sugar of milk, equal parts, is also used; a small portion is put onthe eye by means of a camels hair pencil, and the lid is gently massaged,moving the lid by a circular motion of the finger for ten or fifteen and yellow precipitate of mercury ointment or a few drops of iodideof potassium, 3 per cent, solution, are sometimes found useful as an ab-sorbent. When there are elevations or encrustations on the cornea dueto the deposit of chemicals from eye washes, they can be curetted(scraped) off by means of a sharp knife. The cornea is, as a result of this. Fig. 141.—Leucoma. irritation, apt to be slightly denser in its structure. Certain permanentopacities of the cornea that disfigure the animal can be modified bymeans of tattooing; the eye is cocained and a tattooing needle punctures are made in an oblique direction to avoid any possibilityof puncturing the cornea; a great number of small punctures are madein the body of the opacity, covering its entire surface, and sepia or indiaink rubbed into punctures. This is done by putting the color in solutionon the eye and massaging the lid for ten or fifteen minutes at a tattooing may have to be repeated several times. 416 DISEASES OF THE EYES DISEASES OF THE CRYSTALLINE All diseases of the lens, either of its membranes or its capsule, as arule cause a certain amount of opacity, and may form one or more star-like gray bodies in the centre of the lens itself (cataract). It is notpossible to enter into a description
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