The treatment in the Irish Wolfhound from the preceeding question has involved pleating the lateral rectus muscle to turn the eye, but has had the effect of bringing across the third eyelid. Why is that?
Our surgery has also pulled the globe inwards making it enophthalmic. Interestingly either enophthalmos or exophthalmos as in this dog with an orbital tumour, cause third eyelid protruision. In the case of the Irish wolfhound, removal of the third eyelid restored vision.