What is "ora serrata"?

The ora serrata is the boundary region between the retina and the ciliary body in the human eye. It is characterized by a jagged or serrated appearance, hence its name. This area marks the transition from the sensory retina, responsible for visual perception, to the ciliary body, which plays a role in accommodating the lens for focusing. The ora serrata contains the last row of photoreceptor cells in the retina, known as the retinal ora, before transitioning to the non-photosensitive ciliary epithelium. Its unique structure and location make the ora serrata an important anatomical landmark in the eye.