284 DISEASES OF THE HGBSE. 



Encysted, honeylike (meliceroiis), sebaceous, and fibrous tumors of 

 the lids all require removal Avith the knife. 



TORN EYELIDS OR WOUNDS OF EYELIDS. 



The eyelids are torn by attacks with horns of cattle, or with the 

 teeth, or by getting caught on nails in stall, rack, or manger, on the 

 point of stumps, fences, or fence rails, on the barbs of wire fences, 

 and on other pointed bodies. The edges should be brought together 

 as promptly as possible, so as to effect union without the formation of 

 matter, puckering of the skin, and unsightly distortions. Great care 

 is necessary to bring the two edges together evenly without twisting 

 or puckering. The simplest mode of holding them together is by a 

 series of sharp pins passed through the lips of the wound at intervals 

 of not more than a third of an inch, and held together by a thread 

 twisted around each pin in the form of the figure 8, and carried 

 obliquely from pin to i^in in two directions, so as to prevent gaping 

 of the wound in the intervals. The points of the pins may then be 

 c-ut off with scissors, and the wound may be wet twice a day with a 

 weak solution of carbolic acid. 



TUMOR OF THE HAW, OR CARIES OF THE CARTILAGE. 



Though cruelly excised for alleged ''" hooks," when itself perfectly 

 healthy, in the various diseases which lead to retraction of the eye 

 into its socket, the haw may, like other bodily structures, be itself the 

 seat of actual disease. The pigmentary, black tumors of white horses 

 and soft (encephaloid) cancer may attack this part primarily or 

 extend to it from the eyeball or eyelids ; hairs have been found grow- 

 ing from its surface, and the mucous membrane covering it becomes 

 inflamed in common with that covering the front of the eye. These 

 inflammations are but a phase of the inflammation of the externa] 

 structures of the eye, and demand no particular notice nor special 

 treatment. The tumors lead to such irregular enlargement and dis- 

 tortion of the haw that the condition is not to be confounded with 

 the simple projection of the healthy structure over the eye when the 

 lids are pushed apart with the finger and thumb, and the same re- 

 mark applies to the ulceration, or caries, of the cartilage. In tlie 

 latter case, besides the swelling and distortion of the haw, there is 

 this peculiarity, that in the midst of the red inflamed mass there 

 appears a white line or mass formed by the exposed edge of the 

 ulcerating cartilage. The animal having been thrown and properly 

 fixed, an assistant holds the eyelids apart while the operator seizes 

 the haw with forceps or hook and carefully dissects it out with blunt- 

 pointed scissors. The eye is then covered with a cloth, kept wet 

 with an eyewash, as for external ophthalmia. 



