(From adnascor, to grow to). The outer coat of the eye; called also circu?ncalualis, circumossalis,albuginea, epipephycos. It is that which makes the white of the eye, called also exclopion, and is thus formed: five of the muscles which move the eye take their origin from the bottom of the orbit, and the sixth arises from the edge of it; they are all inserted by a tendinous expansion into the anterior part of the tunica sclerotica; and this expansion gives the whiteness peculiar to the fore part of the eye. It lies between the sclerotica and conjunctiva. It is-extremely sensible, and abounds with blood-vessels, which are very visible in inflammations. It covers so much of the eye as is called the white; and, being reflected all round, it lines the two eye-lids, and thus hinders any thing from falling into the orbit. Where it covers the eye-lids, it is vascular and papillous. In passing over the orbit, it does not end at the cornea, but becomes transparent there, and is of different textures in different parts where it is spread. The sclerotica appears under it.
When a foreign body gets between the eye and the eye-lid, it is hooked in the villi: the best way<to extricate it is, to invert the eye-lid, and to introduce a probe armed with lint and dipped in oil.
The inverted eye-lid proceeds from this coat. Though it is exactly commensurate to the orbit in health, yet, in morbid habits, when it is inflamed, it is thickened and puffed out. If it does not yield to general remedies, as bleeding, purging, etc. it must be punctured; and if this also fails, the redundant part must be cut off.