The ciliary processes are about 70-80 radial ridges on the inner surface of the front part of the ciliary body. Their capillaries and double-layered epithelium produce the aqueous humour, and the lens zonules attach between them.
| Location | Pars plicata of the ciliary body, just behind the iris and around the lens |
|---|---|
| Parts |
|
| Nerve Supply | Long and short ciliary nerves (ophthalmic nerve, trigeminal) |
| Blood Supply | Major arterial circle of the iris (long posterior and anterior ciliary arteries) |
Secrete aqueous humour that nourishes the lens and cornea and maintains eye pressure.
Many glaucoma drugs (beta-blockers, carbonic anhydrase inhibitors, alpha agonists) lower eye pressure by reducing aqueous production here. In refractory glaucoma the processes may be partly destroyed by laser (cyclophotocoagulation).
Optic nerve damage usually linked to raised eye pressure, treated partly by reducing aqueous production.
Abnormally low eye pressure if aqueous production fails, for example after inflammation or surgery.
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