Corneoscleral limbus
Limbus corneae
Sensory (eye & ear)OrgansHeadLeft and right
View left in 3D View right in 3D
- What it is
- The 1-2 mm wide grey-blue transition zone where the clear cornea meets the white sclera. It houses the corneal stem cells and, on its inner side, the drainage angle with the trabecular meshwork and Schlemm's canal.
- Function
- Regenerates the corneal surface and drains aqueous humour out of the eye.
- Size
- Ring ~11.7 mm across and 1-2 mm wide.
- Clinical note
- Surgeons enter the eye at the limbus for cataract and glaucoma operations; a grey ring just inside it (arcus) can signal high cholesterol in younger adults.