“…The etiology is unknown, but the current hypothesis is that this disorder is a juvenile defect, probably hereditary, and due to laxity of the connective tissue which anchors the gland to the third eyelid . A breed predisposition exists for several breeds including the English and American Cocker Spaniel, Basset Hound, Beagle, Boston Terrier, English and French Bulldog, Lhasa Apso, Pekingese, and Shih‐Tzu . It has been suggested that the prolapse is due to the anatomical conformation of the orbit in brachycephalic breeds .…”