The lids are swollen and inflamed, and indeed this may be so marked as to cause involuntary eversion, exposing the reddened conjunctiva to view.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
They are attached to the circumference of the orbit and have a convex external face formed by the skin and a concave internal face molded on the anterior surface of the eye and are lined by the conjunctiva, which is reflected above and below on the eyeball.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
Its interior portion, which is covered by the ocular conjunctiva, is commonly known as the "white of the eye."
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler