APPENDIX. 123 



violence done to the eye as well as any foreign 

 substance that may come in contact with that 

 delicate organ as \vell as the influence of cold 

 currents which may not only inflame the imme- 

 diate coats of the eye and lachrymal duct but 

 derange the whole normal condition of that deli 

 cate organ. This organ may likewise be affected 

 by a worm called Filaria LacJirimalis, lodged 

 inside the eyelids and in pigs of the measle blad- 

 der worm which is called Cysticerus Cellulosu, 

 lodged in the fat around the eye The general 

 symptoms of this disease are a more or less in- 

 flamed appearance of the lids and coats of the 

 eye, invariably discharging a watery fluid, and 

 in the beginning always attended with heat in 

 proportion to severity of inflammatory stage. In 

 a short time after first attack (if not at once 

 cured) a bluish white film appears over the sight 

 but does not penetrate deeper than transparent 

 part of the eye-ball. The swelling of the eyelids 

 may sometimes be so great as to fill up the hollow 

 above the eye. There is apparently an entire 

 absence of sensibility on exposure to light as in 

 a sound state of the eye which establishes the 

 mechanical fact that the film covering the eye 

 shields the optic nerve from the irritating influence 

 of light or that the shock of disease has tempor- 

 arily paralized the sensibility of the optic nerve. 

 TREATMENT : The practitioner must first 

 submit affected eye to a careful but thorough exam- 

 ination that he may know wether any foreign 

 irritative substance is producing the disease pres- 

 ent, and in case hay-seed, chaff, dust, sand or 

 any floating object is found it may be removed 

 with a handkerchief and a thin, flat curved stick 

 if the surgeon is in possession of no better instru- 

 ment. Should the offending object be thorn, 



