Scleral spur

The scleral spur is an annular structure composed of collagen in the human eye, a protrusion of the sclera into the anterior chamber. It is the origin of the longitudinal and circular fibres (which swerve acutely from the spur to run circumferentially as a sphincter near the periphery of the lens)[1] of the ciliary muscle and is attached anteriorly to the trabecular meshwork.

Scleral spur
Enlarged general view of the iridial angle (Scleral spur appear at upper right)
Details
SystemVisual system
Identifiers
LatinCalcar sclerae
Anatomical terms of neuroanatomy

Role in treatment of Glaucoma

Open-angle glaucoma (OAG) and closed-angle glaucoma (CAG) may be treated by muscarinic receptor agonists (e.g., pilocarpine), which cause rapid miosis and contraction of the ciliary muscles, this pulls the scleral spur and results in the trabecular meshwork being stretched and separated. This opens the fluid pathways and facilitates drainage of the aqueous humour into the canal of Schlemm and ultimately decreasing intraocular pressure.[2]

gollark: The easiest way would probably just be to send scanned brains over via starwisp or something.
gollark: Quite possibly.
gollark: This is probably not accurate, as nobody has done it or gotten close to.
gollark: Arbitrary estimates for the computation required to run a brain which I read somewhere claim you'd need something like an exabyte of storage and an exaflop of... computing power?
gollark: Indeed. Much easier.

References
  1. Gray's Anatomy: The Anatomical Basis of Clinical Practice (41st ed.). Elsevier. 2015. p. 693. ISBN 978-0-7020-5230-9.
  2. Neal, M. J. (2004). "Medical Pharmacology at a Glance" (6th edition). Wiley-Blackwell. p. 27. ISBN 978-1-4051-5044-6

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