SCLERA
- the outermost membrane of the eyeball [n SCLERAS or SCLERAE]
- the white, fibrous outer coat of the eyeball [n SCLERAE, SCLERAS] : SCLERAL [adj]
- dense, white, fibrous membrane that, with the cornea, forms the external covering of the eyeball
- the dense fibrous opaque white outer coat enclosing the eyeball except the part covered by the cornea see eye illustration