General disorders of the sclera or white of the eye. They may include anatomic, embryologic, degenerative, or pigmentation defects.

An operation for retinal detachment which reduces the size of the globe by indenting the sclera so that it approximates the retina.

The white, opaque, fibrous, outer tunic of the eyeball, covering it entirely excepting the segment covered anteriorly by the cornea. It is essentially avascular but contains apertures for vessels, lymphatics, and nerves. It receives the tendons of insertion of the extraocular muscles and at the corneoscleral junction contains the canal of Schlemm. (From Cline et al., Dictionary of Visual Science, 4th ed)