366 Veterinary Medicine. 



prevent drying. A few grains of morphia added to the collyria 

 will be specially soothing. Irrigation of the eyelids or bathing 

 for ten or fifteen minutes at a time with luke warm water, will 

 often greatly relieve. When the eyelids become agglutinated 

 during sleep or prolonged closure, as in the small animals, cleanse 

 with a tepid sublimate solution, and smear with vaseline. In 

 severe cases local depletion may be resorted to. The hair may 

 be shaved off from an area of 2 inches below the orbit, and a cup 

 applied for ten minutes. Scarification may or may not be re- 

 sorted to. Or a leech may be applied to the same part. 



A laxative often proves an excellent derivative especially use- 

 ful in costive conditions. 



CHRONIC CONJUNCTIVITIS. 



Sequel of acute. Same causes. Old horses, young foals, damp lands, 

 night dews, frosts, eczema, follicular scabies. Lesions : swelling of lymph 

 bodies in conjunctival pouch, general congestion, chemosis, hypertrophied 

 papillte, clouded cornea; Symptoms : as in acute form but less intense. 

 Treatment : Remove cause, irritants, damp soils, stables, etc., glare of 

 light, heat, etc., astringent antiseptic lotions, atropia, mercury oxide, coun- 

 ter-irritation, setoning, cupping, leeching. 



This is generally recognized by veterinary writers as a sequel 

 of the acute form, though it may begin de novo, from slight per- 

 sistent causes of irritation. Habitual exposure to fierce light, dusty 

 roads, ammoniacal and other gaseous emanations, and at other 

 times to the dust from musty fodders in a high rack, trichiasis, . 

 entropion, ectropion, and indeed any continued irritation may 

 start the disease or keep it up. Leblanc says it is especially 

 common in old horses and young foals pastured on low damp 

 grounds, bottom lands and lake shores, and in worn out work 

 oxen which have been exposed to cold night dews, or frosts. In 

 this respect it resembles the recurring ophthalmia of the horse 

 which prevails especially in lymphatic subjects. In dogs, Leclainche 

 has observed it associated with eczema or follicular scabies of 

 the lids. 



Lesions. Besides the general congestion of the mucosa, there 

 are liable to be special lesions in the depth of the conjunctival sac 

 at the point where the mucosa passes from the eyelid to the scler- 



