VETEBlNARY OPHTHALMOLOGY. 23 



only untpward results are abscess of brain and menin- 

 gitis. Don't be fooled, when the whole thing may be 

 a simple foreign body, the removal of which will dis- 

 sipate the alarming symptoms. 



Periostitis of the Orbit is generally limited to the 

 margin, of the orbit. It may arise idiopathically in the' 

 rheumatic. Some swelling and redness of the lids and 

 a slight exophthalmus, generally to one side. Some- 

 times slight elevation of temperature. Pus may form 

 beneath the periosteum. In the chronic form there is 

 simply slight swelling of the upper lid and supra-orbi- 

 tal pain, and a little local swelling. This form is very 

 tedious, running months, and ending in caries, deformi- 

 ties, etc. 



Teeatmbnt. — As in cellulitis. If, however, it has' 

 gone on to necrosis, etc., the chisel and gouge come 

 into play, and a thorough removal of and curetting is 

 applied to the carious parts. 



Tumors of the Orbit. — Both benign and malignant. 

 May develop primarily in the orbit or spread from the 

 face. Cause more or less exophthalmus and its conse- 

 quences. 



Treatment is excision. Sometimes it is necesary to 

 remove bulbus also : {Eneuoleation.) 



