DISEASE OF THE MEIBOMIAN GI^ANDS. BLEPHAR- 

 ADENITIS. SEBORRHCEA. 



This is a blepharitis of the edges of the lids which are swollen, 

 red, and incrnsted along their margins with scabs and sebaceous 

 concretions. When tliis scurf is removed the skin is found to be 

 red, tender and glistening. The glands are the seat of conges- 

 tion, and produce a modified secretion in excess, which dries into 

 crusts instead of preserving its normal oleaginous consistenc5^ 

 As these glands open into the follicles of the eyelashes, their walls 

 are implicated and shedding of the lashes is a common result. 

 It may be assumed that this affection is often associated with the 

 proliferation of microbes in the glands and gland ducts, while in 

 other forms the presence of acari is the controlling factor. Wil- 

 son found the demodex folliculorum in the Meibomian glands of 

 the horse, and Oschatz in those of the sheep. 



Treatment. Smear the margins of the lids with vaseline and 

 when the crusts have been thoroughly softened wash them off 

 with Castile soap and warm water. Then dress the margin with 

 the ointment of the yellow oxide of mercury i,in vaseline lo. 

 If demodex is suspected they may be squeezed out and the lids 

 washed frequently with spirits of wine as a solvent. 



HORDEOLUM. STYE. ACNE. 



Eike acne of the skin in general, this consists in inflammation 

 and suppuration of a hair follicle and sebaceous gland. The 

 whole lid or a large part of it may be swollen, but by stroking it 

 with the finger, a hard, rounded, very tender spot will be de- 

 tected and as the disease advances this develops a minute collec- 

 tion of pus. A specially wide orifice favors the entrance of the 

 pus microbes, and the onset of the disease. It has been noted in 

 dogs (Frohner). 



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