RECURRENT OPHTHAI^MIA OF SOI.IPEDS. PERIODIC 

 OPHTHALMIA. MOONBLINDNESS. 



Definition. Causes : wet impermeable soil, clay, river bottoms, deep 

 valleys, inundations, enclosing forests, damp air, lack of sunshine, rank 

 fodders, wet seasons, damp, cold, basement stables, heating constipating 

 fodder (corn, buckwheat, wheat), dentition, training, age of domestication, 

 sale, etc., spring, shedding coat, heredity, debility, ill health, worms, de- 

 bilitating infectious diseases, over work, insufficient, indigestible food, 

 local irritants. Microbes. Rheumatism. Parasitism. Symptoms : fever 

 variable, lack of vigor, sudden attack, irritation, photophobia, lachryma- 

 tion, closed lids, contracted pupils, retracted eye, redness, swelling of lids, 

 conjunctiva, haw, sclera, slight corneal opacity, with vascularity, aqueous 

 turbid, flocculent, iris of dull color, sluggish, pupil contracted, hypopion, 

 posterior chamber yellowish green, intraocular tension, crisis seventh to 

 tenth day, convalescence fifteenth day. Recurrence. Obscurity of vision . 

 Eye between attack : blue zone around cornea, eye seems smaller, retracted, 

 prominent haw, angle in upper lid, dull iris, tint lighter, contracted pupil, 

 cataract, alert ears. Lesions : exudates back of cornea, narrowed anterior 

 chamber, sizy aqueous, thickened iris, adhesions of lens capsule, or iris, 

 torn iris, lens opaque, fibroid, calcareous, atrophied, black cataract, vit- 

 reous opaque, yellow, black, shrunken, choroid uneven, discolored, de- 

 tached, retina with exudate, detacled, posterior chamber contracted. 

 Prevention : drainage, mature horses for damp lands, liming soil, get fod- 

 der from dry locality, don't breed in cloudy regions, good diet and regimen, 

 avoid corn, wheat and buckwheat, Glauber salts, pure dry stable, exclude 

 debilitating diseases and parasites, keep in hard muscular condition, change 

 to dry locality, don't breed from blind stock, legislation. Treatment : re- 

 move causes, cure rheumatism or other morbid factor, darkness, antiphlo- 

 gistics, laxative, diuretic, antimicrobian-potassium iodide, local bleeding, 

 cupping, blister, seton, locally atropine, cocaine, pyoktauin, potassium 

 iodide, sublimate, lead, puncture, tonics, treat corneal opacities. . Jurispru- 

 dence : return a newly bought horse in 30 days, (France) or more : extend 

 the time if suspected. 



Definition. This is an inflammatory affection of tlie interior of 

 the eye, intimately related to certain constitutions, soils, climates, 

 and systems of management, showing a strong tendency to recur 

 again and again, and usually ending in blindness from cataract 

 or other destructive lesion. 



Causes. A wet, impermeable, swampy or undrained soil 

 is a potent cause of this disease. Heavy clays, which absorb and 

 retain moisture, river bottoms and deltas which are frequently 

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