Orbital aspergillosis is a fungal infection around or inside the eye socket. The eye socket is also called the orbit. The orbit has the eyeball, the optic ...

Orbital Apex Syndrome is a problem that happens in a very tight space at the very back of the eye socket, called the orbital apex. This small area is like a ...

Orbital adipose tissue disease” isn’t a formal diagnosis. It’s a descriptive way to say “the fat inside the eye socket is part of the disease.” In real-world ...

Orbital actinomycosis is a long-standing bacterial infection that grows in and around the eye socket (the orbit). The orbit is the bony cup that holds the ...

The ora serrata is the serrated junction where the retina (the light-sensitive tissue at the back of the eye) transitions into the ciliary body. It marks the ...

Optociliary shunt vessels are special “detour” blood vessels that appear on the surface of the optic disc, which is the round, pink area where the optic nerve ...

An optic disc pit is a small, round or oval congenital hole or pocket in the optic nerve head. The optic nerve head is the spot where the nerve exits the eye. ...

An optic pit is a tiny, oval or round depression (a small “dimple”) on the surface of the optic nerve head—the place where the nerve exits the back of the eye. ...

Optic perineuritis (often shortened to OPN) is an inflammation that sits around the optic nerve, not inside the nerve itself. The optic nerve is the cable that ...

Craniofacial fibrous dysplasia is a bone problem that happens in the skull and face. In this condition, normal hard bone is slowly replaced by soft, rubbery, ...

McCune-Albright syndrome (MAS), some people develop fibrous dysplasia (FD) in the skull and face bones. FD is a bone problem where normal bone is replaced by ...

Optic neuropathy means there is damage or disease affecting the optic nerve, the cable that carries visual signals from the eye to the brain. When the optic ...

Optic neuritis means inflammation of the optic nerve, the “cable” that carries pictures from your eye to your brain. When this nerve gets inflamed, vision ...

Optic nerve sheath meningioma is a slow-growing, usually benign (non-cancerous) tumor that starts in the thin lining (the meninges) that wraps around the optic ...

Optic nerve sheath decompression is a delicate eye-orbit surgery that a specialist eye surgeon performs to protect vision when pressure inside the head is ...

Optic nerve hypoplasia (ONH) is a birth difference of the eye–brain connection. The optic nerve is the “cable” that carries visual signals from the eye to the ...

Optic Nerve Head Drusen (ONHD) are tiny, rock-like (often calcified) deposits that sit inside the optic nerve head (the “disc” you see at the back of the eye). ...

Optic nerve head avulsion means the optic nerve fibers are torn away from the back of the eye right at the optic nerve head (the “optic disc,” the round, pink ...

An optic nerve glioma is a tumor that grows from the support cells of the optic pathway, which is the “wire” that carries visual signals from the eye to the ...

The optic nerve is the “cable” that carries visual signals from your eye to your brain. In some babies, a part of the tissue near the optic nerve does not ...