The ora serrata is the wavy, saw-toothed front edge of the light-sensitive retina, where it ends and joins the ciliary body. Beyond it the retina continues forward only as a thin non-seeing layer.
| Location | About 6-8 mm behind the corneoscleral limbus, around the inside of the eyeball |
|---|---|
| Parts |
|
| Nerve Supply | Long and short ciliary nerves (ophthalmic nerve, trigeminal) |
| Blood Supply | Short posterior ciliary arteries; Central retinal artery (terminal branches) |
Marks the forward limit of the seeing retina and the start of the ciliary body.
Retinal tears and dialysis (detachment at the ora) often occur here, especially after blunt trauma, and are found by examining the far periphery with indentation. It is a landmark for safe entry of instruments into the eye (pars plana) during surgery.
Separation of the retina at the ora serrata, often after blunt eye trauma, leading to detachment.
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