scleral spur

(redirected from calcar sclerae)

scleral spur

[TA]
circular ridge of sclera on the internal aspect of the corneoscleral junction; on cross-section, it appears as a hooklike process deep to the scleral venous sinus; relatively rigid, it provides attachment for the meridional fibers of the ciliary body.
Synonym(s): calcar sclerae [TA], scleral roll

scle·ral spur

(skērăl spŭr) [TA]
Circular ridge of sclera on the internal aspect of the corneoscleral junction.
Synonym(s): calcar sclerae [TA] , scleral roll.

scleral spur

Scleral fibers bordered anteriorly by the canal of Schlemm and the trabecular meshwork and posteriorly by the ciliary muscle fibers.
See also: spur

scleral spur 

A ridge of the sclera at the level of the limbus interposed between the posterior portion of Schlemm's canal and the anterior part of the ciliary body. The scleral spur is the structure to which some of the ciliary muscle fibres are attached. See gonioscopy; internal scleral sulcus.