VETERINARY OPHTHALMOLOGY. 89 



eyes. The one condition, 



remember, which will cause 

 a doubtful prognosis is 

 si/nec/na, otherwise, with a 

 reasonably robust patient, 

 the prognosis is good. 

 There is a special form of 

 iritis called purulent, and ^'^" '^'' 



its most prevalent cause is trauma. Follows opera- 

 tions on the eye. This form is accompanied by the 

 formation of pus usually, and which inay be in such 

 degree as to collect at the bottom of the anterior 

 chamber, forming hypopyon. This may run on to 

 panophthalmitis or general suppuration of the eye. 



Treatment. — Assure yourself that no exciting cause 

 remains in the eye. Then atro2nne till full mydriasis is 

 secured. If 1% be not strong enough, use stronger and 

 stronger solutions until the effect is accomplished, even 

 to the crude drug. Then maintain it by a weaker solu- 

 tion. The patient must be kept quiet in darkened stall 

 and not overfed. Cold applications are the most recent 

 and successful method of treatment of cases with rheu- 

 matic com plications. But in using very cold applications, 

 watch out for haziness of the cornea, when they must 

 be discontinued (ITelfrich, Schenck). Now, though this 

 seems paradoxical, warmth is a valuable means of treat- 

 ment in some cases, and is especially valuable in re- 

 lieving the pain at night. Let it be d)->/ rather than 



