Ora serrata - retinal versus choroidal detachment

Case contributed by Dr Charlie Chia-Tsong Hsu

Ora serrata cannot be seen on conventional imaging but is an inferred reference point. On the axial plane it is located at the 2 and 10 o'clock position of the globe immediately posterior to the ciliary bodies. Knowledge of this reference point maybe useful to distinguish between retinal and choroidal detachement on imaging.

Figure A and B is a example of retinal detachment with bilateral V- shaped intraorbital leaflets converging towards the optic disc. Importantly the anterior margin of the leaflets do not extend beyond the ora serrata reference point at the 2 and 10 o'clock position. Conversely Figure C and D shows bilateral choroidal detachment with convex intraorbital leaflets anteriorly extending beyond the ora serrata reference point.

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Case Information

rID: 30499
Case created: 14th Aug 2014
Last edited: 31st Dec 2015
System: Head & Neck
Inclusion in quiz mode: Excluded

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