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The scleral spur and scleral roll
Investigative Ophthalmology & Visual Science
|October 1, 1977
Summary
The scleral spur and roll form a unit that resists tensile forces, similar to sclera. This structure may prevent ciliary muscle action from collapsing the Schlemm canal.
Area of Science:
- Ophthalmology
- Biomechanics
- Anatomy
Background:
- The scleral spur and scleral roll are key anatomical structures in the anterior segment of the eye.
- Understanding their biomechanical properties is crucial for comprehending intraocular pressure regulation.
Purpose of the Study:
- To investigate the biomechanical properties of the combined scleral spur and scleral roll unit.
- To propose a functional role for this structure in maintaining the patency of the canal of Schlemm.
Main Methods:
- Tensile testing was performed on the scleral spur-roll complex.
- The results were compared to existing data on scleral tissue.
Main Results:
- The scleral spur and scleral roll detach as a single fibrous unit.
- Tensile test results for the spur-roll were comparable to previously reported data for scleral tissue.
Conclusions:
- The combined scleral spur and roll form a resilient fibrous hoop.
- Its circular structure is hypothesized to prevent the meridional ciliary muscle from collapsing the canal of Schlemm, thereby aiding in maintaining aqueous humor outflow pathways.