The bony orbit refers to the bones that constitute the margins of the orbits, that is the roof, medial and lateral walls and floor. The orbital margin or rim refers to the anterior circular margin of the orbit.
What is an orbital fracture?
An orbital fracture is when there is a break in one of the bones surrounding the eyeball (called the orbit, or eye socket). Usually this kind of injury is caused by blunt force trauma, when something hits the eye very hard. Orbital Fracture Types. Any of the bones surrounding the eye can be fractured, or broken.
What is the apex of the orbit?
The orbital apex refers to the posterior confluence of the orbit, where the optic canal, superior orbital fissure and inferior orbital fissure transmit nerves and vessels into the orbit. There are seven bones that contribute to the bony orbit: The four bones of the medial wall are remembered with this mnemonic.
How many bones are there in the orbit?
There are 7 bones that comprise the orbit. It is our job as ophthalmologists to be able to readily identify these bones and know pretty much every bump, notch, hole, and contour of these bones and what structures pass through, travel along, and attach to these bones. Orbital bones. Image from AccessLange: General Ophthalmology.
