128 VETERINARY MEDICINE AND SURGERY. 



toms increase, the eye sinks somewliat in its socket, and at the same time 

 the haw is brought partly forward over the eye. Then, there is a great 

 redness of the conjunctival membrane, and blood-vessels appear in it, 

 some of them running in a circular direction and others radiating to a 

 central j)oint; there is also general dimness of the surface, and a copi- 

 ous flow of hot tears. These symptoms will soon be followed by the 

 aqueous humor aiDpearing thick and muddy, and the iris losing its brilli- 

 ancy. In very acute cases, there soon occurs a deposit of lymph, often 

 tinged Avith blood, which fills up the anterior chamber of the eye, so 

 that the state of the interior can no longer be seen. 



When improvement is about to take place, the curtain of lymph 

 gradually falls down from the superior border of the anterior chamber, 

 if it has been attached there, and we are then enabled to see what mis- 

 chief has been going on within the eye. These changes, both for better 

 and for Avorse, take place in a remarkably short space of time. 



"We may find even after the first attack that the iris is adherent to the 

 capsule of the lens, or that cataract has commenced to form in the lens 

 or in its capsule. But these marked eifects do not usually appear until 

 after several attacks. More generally we find no other trace of the attack 

 than that the iris has lost in a very slight degree the brilliancy of its color, 

 the lens a little of its clearness, and that the pupil of the eye attacked is 

 somewhat smaller than that of the other. A little opacity, varying more 

 or less according to the virulence of the attack, is also left in the cornea, 

 l^articularly round its margins. The iris also does not act quite so freely in 

 the diseased as in the other eye, and hence the pupil is not kept quite so 

 dilated as it ought to be. All these effects are due to the fact the pro- 

 ducts of inflammation have not been completely absorbed and carried away. 

 In a first attack, the animal usually recovers quickly, after the disease 

 begins to abate. 



The iieriod of intermission between the first and second attacks varies 

 from three Aveeks to three months or longer; but succeeding attacks 

 often follow more rapidly, until the sight is destroyed by the formation 

 of a cataract. 



Treatment. — No reliable means of preventing a recurrence of the at- 

 tack is known, but still nothing which can give relief should be neglected. 

 The patient should be placed in a cool, Avell ventilated loose box, and a 

 diminished light only should be admitted; the body should be kept warm 

 by clothing, a linen shade kept constantly Avet should be applied over the 



