l8b THE MANAGEMENT AND DISEASES OF THE DOG. 



Symptoms. — The iris is changed in color, a deep reddish- 

 brown tint, often extending beyond the edges of the cornea, 

 may be plainly seen. The pupil becomes contracted, and to 

 a great extent immovable to the stimulus of light. Excess 

 in the lachrymal secretion, pain and intolerance of light, and 

 cold, are the accompanying symptoms. As the disease pro- 

 ceeds the eye becomes, from the engorged condition of the 

 vessels, generally bloodshot. Extravasation of blood occa- 

 sionally takes place, resulting in the formation of pus, and the 

 total destruction of vision. 



Treatment. — Here the local abstraction of blood is strongly 

 indicated, together with absolute darkness. Warm fomenta- 

 tions, and free movement of the bowels. 



When the acute symptoms have passed away, the adminis- 

 tration of tonics, and small doses of the iodide of potassium, 

 and if protracted, a seton in the poll, will materially assist in 

 restoring the eye to its natural condition. The light should 

 be subdued so long as inflammatory symptoms are present, 

 and gradually increased as these disappear. 



ENLARGEMENT OF THE HAW. 



The haw (membrana nictitans), or fold of membrane 

 placed at the inner corner of the eye, is for the purpose of 

 removing foreign bodies or irritants from the globe. Occa- 

 sionally, from external violence, irritation or constitutional 

 disease, it becomes enlarged, prominent, and obstructive to 

 vision and closure of the eyelids. In such cases the part 

 presents a red and highly inflamed appearance, is exceedingly 

 sensitive to touch, causes the animal considerable pain, and 

 gives rise to profuse lachrymation. 



Treatment. — The primary treatment consists in scarifying 

 and warm fomentations. Should the enlargement persist, it 



