Category: Eye & Vision Care

Graves’ ophthalmopathy is an eye problem that happens when the body’s immune system attacks the tissues around the eyes, usually in people who also have Graves’ disease (autoimmune thyroid overactivity). The tissues and muscles behind the eyes become swollen and Read More …

Dalrymple’s sign is a medical eye sign. It means that the upper eyelid is pulled up too high, so the opening between the lids looks very wide and more of the white part of the eye (sclera) is visible above Read More …

Graves ophthalmopathy, also known as thyroid eye disease (TED), is an autoimmune inflammatory disorder of the orbit and periorbital tissues, characterized by upper eyelid retraction, lid lag, swelling, redness (erythema), conjunctivitis, and bulging eyes (exophthalmos).[rx] It occurs most commonly in Read More …

Cranial Nerve Six/Cranial nerve six (CN VI) also known as the abducens nerve, is one of the nerves responsible for the extraocular motor functions of the eye, along with the oculomotor nerve (CN III) and the trochlear nerve (CN IV). The sixth cranial nerve runs a Read More …

The Occipital Nerves are a group of nerves that arise from the C2 and C3 spinal nerves. They innervate the posterior scalp up as far as the vertex and other structures as well, such as the ear.[rx] There are three major Read More …

Third Cranial Nerve (CN III) /Oculomotor Nerve is the third cranial nerve (CN III). It enters the orbit via the superior orbital fissure and innervates extrinsic eye muscles that enable most movements of the eye and that raise the eyelid. The nerve also contains fibers that innervate the intrinsic Read More …

Oculomotor Nerve is the third cranial nerve (CN III). It enters the orbit via the superior orbital fissure and innervates extrinsic eye muscles that enable most movements of the eye and that raise the eyelid. The nerve also contains fibers that innervate the intrinsic eye muscles that enable pupillary Read More …

The ophthalmic artery is the first branch of the internal carotid artery. It comes off just distal to the cavernous sinus. The ophthalmic artery gives off many branches, which supply the orbit, meninges, face, and upper nose. When the ophthalmic Read More …

The orbits are bony structures of the skull that house the globe, extraocular muscles, nerves, blood vessels, lacrimal apparatus, and adipose tissue. Each orbit protects the globe, while the supportive tissues allow the globe to move in three dimensions (horizontal, Read More …

The optic canal is a funnel-like structure as part of the sphenoid bone that extends from the optic foramen to the orbital apex, the posterior-most end of the orbit. The orbital apex consists of the optic canal and the superior orbital fissure. Read More …

Optic nerve sheath decompression more commonly known as optic nerve sheath fenestration (ONSF), is a surgical procedure performed to decompress the optic nerves and relieve vision-threatening papilledema in the setting of elevated intracranial pressure (ICP). Performance of this procedure is Read More …