scleral spur


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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.
References in periodicals archive ?
Gonioscopic findings included 58 eyes (58%) open to the ciliary body band, 41 eyes (41%) open to the scleral spur, and one eye (1%) open to the posterior trabecular meshwork.
An eye is graded occludable if there is any contact seen between the iris and the angle wall anterior to the scleral spur in one quadrant or more.
A scleral pocket at 95% depth is then created by tunneling anteriorly towards the scleral spur. At this point, a vertical incision is made into the choroidal space and a small amount of suprachoroidal anaesthesia and viscoelastic are administered with a blunt cannula.
b/ The ciliary body can be seen below the scleral spur
The iris insertion is graded A-E, with A and B being above an d below Schwalbe's line respectively, C is at the Scleral Spur and D and E below this, with varying amounts of the ciliary body band viuble.