Pars plana
From Wikipedia the free encyclopedia
 | This article needs additional citations for verification. (January 2021) |
The pars plana (also known as orbicularis ciliaris [1]) (Latin: flat portion) is part of the ciliary body in the uvea (or vascular tunic, the middle layer of the three layers that comprise the eye).
It is about 4 mm long, located near the junction of the iris and sclera, and is scalloped in appearance.
The pars plana may not have a function in the post-fetal period, making this a good site of entry for ophthalmic surgery of the posterior segment of eyeball; this surgery is known as pars plana vitrectomy.
References
[edit]- ^ Lee Ann, Remington. Clinical anatomy and physiology of the visual system (3 ed.). Elsevier. p. 47.
| Fibrous tunic (outer) |
|  | |||||
|---|---|---|---|---|---|---|---|
| Uvea / vascular tunic (middle) |
| ||||||
| Retina (inner) |
| ||||||
| Anatomical regions of the eye |
| ||||||
| Other | |||||||
 | This article about the eye is a stub. You can help Wikipedia by expanding it. |