420 
R. C. MOORE. 
increases the pressure on and injury to the eye. 
The inversion may be the entire length of the lid, or only a 
small part of it may be inverted. It may be turned in so that 
not only the lashes, but the hair covering the skin of the lid 
contacts the eye, while in many cases only a limited number of 
the lashes are touching the sensitive structure called by some 
u trichiasis,” but is merely a modified degree of entropion, and 
owing to the very slight anatomical defect, is much more diffi¬ 
cult to diagnose. 
One would naturally think a diagnosis would be easy, as 
the abnormality is in plain view, but such is not always the 
case. The constant pain causes the animal to keep the eye 
more or less closed, which hides the lesion. On careful obser¬ 
vation, when the animal is not expecting you to disturb it, the 
opening to the eye will appear to be too small, then by compar¬ 
ison the ciliary margin will be seen to be displaced inward, to 
a greater or less degree. 
This is, in all probability, always congenital, although it 
may become more aggravated from the constant contraction of 
the obicularis palpebrarum muscle, and is due to over-develop¬ 
ment of the skin of the eyelid, or rather too much skin for the 
mucous membrane, allowing the latter to draw the margin of 
the lid inward ; may be either or both lids, but most commonly 
the lower lid. 
Treatment consists in the removal of an elliptical piece of 
the lid, the same as of the membrane in ectropion. It is well 
to take up a piece of the skin with the forceps, to determine 
just how much it is necessary to remove to bring the margin to 
its normal position, then remove the piece included in the for¬ 
ceps by making an incision through the skin from the inner can- 
thus, parallel to and just far enough from the margin to allow 
room for sutures, carrying it to the outer canthus, or further if 
the skin be turned in at the canthus, then commencing at the 
same point near the inner canthus, a counter incision is carried 
on the opposite side of the forceps, to join the first at the outer 
canthus, and the circumscribed piece removed, the edges brought 
