What are the branches of ophthalmic artery?

The Terminal Branches = There are two terminal branches of the ophthalmic artery. The supratrochlear (frontal) artery and the dorsal nasal artery. Both of these vessels exit the orbit medially and supply the forehead and scalp.

Where does the ophthalmic vein pass through?

superior orbital fissure
The superior ophthalmic vein is a vein of the orbit around the eye. It begins from the angular vein and the supraorbital vein, and passes through the superior orbital fissure to drain into the cavernous sinus.

What is the superior ophthalmic vein?

The superior ophthalmic vein takes a posterior course between the superior rectus muscle and the optic nerve (CN II), traveling close to the ophthalmic artery. It traverses the retro-orbital fat and leaves the orbit through the upper part of the superior orbital fissure, just above the lateral rectus muscle.

What is the blood supply to the retina?

The retina is supplied with blood through two branches of the OA: the central retinal artery (CRA) and the posterior ciliary arteries. 1-3. The first branch, the central retinal artery, runs along the optic nerve, passing through the lamina cribrosa and entering the optic disc nasal to the postocular center.

How do I remember the branches of my ophthalmic artery?

A useful mnemonic to remember the branches of the ophthalmic artery is: DR MCLESSI Mnemonic D: dorsal nasal artery R: (central) retinal artery M: muscular artery C: ciliary arteries (long, short and anterior) L: lacrimal artery E: ethmoidal arteries (anterior and posterior) S: supraorbi…

What is the origin of ophthalmic artery?

In man the ophthalmic artery arises within the skull from the internal carotid artery, and travels to the orbit with the optic nerve via the optic foramen. In the orbit it runs close to the optic nerve giving off the long and short posterior ciliary arteries that pierce the sclera and supply the choroid.

What drains into ophthalmic vein?

The inferior ophthalmic vein begins as a plexus near the anterior floor of the orbit. It drains blood from the lower and lateral muscles, the inferior conjunctiva, the lacrimal sac, and the inferior vortex veins.

What artery passes through optic canal?

the ophthalmic artery
The optic canal is a very important structure due to the structures that pass through this canal, mainly the optic nerve and the ophthalmic artery.

What is ophthalmic vein thrombosis?

Superior ophthalmic vein thrombosis (SOVT) is a rare vision- and life-threatening complication with many underlying etiologies such as infectious and inflammatory orbital disease, trauma, neoplasm, and a hypercoagulable state.

What is a vortex vein?

The vorticose veins, more commonly referred to as vortex veins, drain the ocular choroid. Some empty into the cavernous sinus through the superior orbital veins, whereas others drain into the pterygoid plexus through the inferior orbital veins.

What are the 3 layers of the retina?

There are three primary layers in the retina that are made up of nerve cells or neurons. These are the photoreceptor cell layer, ganglion cell layer and bipolar cell layer.

What are the veins in eyes called?

An ophthalmic artery and a central retinal artery (an artery that branches off of the ophthalmic artery) provide blood to each eye. Similarly, ophthalmic veins (vortex veins) and a central retinal vein drain blood from the eye. These blood vessels enter and leave through the back of the eye.

How many arteries does the eye have?

There are 7 of these arteries per eye, and they supply the sclera, and rectus muscles. They branch from the ophthalmic artery and pass forwards to the anterior aspect of the eyeball, where they pierce the sclera, near the cornea, and terminate in the circulus arteriosus major, that surrounds the iris.

What does ophthalmic artery mean?

Medical Definition of ophthalmic artery : a branch of the internal carotid artery following the optic nerve through the optic foramen into the orbit and supplying the eye and adjacent structures.

What is ophthalmic vein?

Ophthalmic veins are veins which drain the eye. Ophthalmic veins. Veins of orbit.

Which branches of the Arteria Ophthalmica are involved in the blood supply to the walls of the nasal cavity?

Dorsal nasal artery: the second terminal branch of the ophthalmic artery. Along its course, it gives off several branches which supply the nasolacrimal sac and the dorsum of the nose.

What passes through the foramen ovale?

The following structures pass through foramen ovale: mandibular nerve (a branch of the trigeminal nerve). accessory meningeal artery. lesser petrosal nerve (a branch of the glossopharyngeal nerve).

What does facial vein drain into?

internal jugular vein
The common facial vein descends superficial to the loop of the lingual artery, the hypoglossal nerve and external and internal carotid arteries, and goes on to drain into the internal jugular vein, roughly at the level of the hyoid bone.

How many vortex veins are present?

There are four vortex veins, but only two of them, the superior medial and the lateral, are located in the superior orbital venous system (Figs. 1 2 , bottom). They emerge from the episcleral space between the sclera and the fascial sheath of the eyeball (Tenon’s capsule).

How do vortex veins appear?

Typically, the entrances to the vortex veins in the outer layer of the choroid (lamina vasculosa) can be observed funduscopically and provide an important clinical landmarks identifying the ocular equator. However, the veins run posteriorly in the sclera exiting the eye well posterior to the equator.

What is the ophthalmic artery?

The ophthalmic artery ( OA) is an artery of the head. It is the first branch of the internal carotid artery distal to the cavernous sinus. Branches of the ophthalmic artery supply all the structures in the orbit around the eye, as well as some structures in the nose, face, and meninges.

What is the anatomy of the ophthalmic veins?

The anatomy of the ophthalmic veins is significant as these veins connect the anterior facial vein with the cavernous sinus. Given that the cavernous sinus also communicates with the veins of the base of the brain, this chain opens a pathway for the spreading of facial infections which can be fatal if not treated.

What are the tributaries of the inferior ophthalmic vein?

The inferior ophthalmic vein receives the following tributaries within the orbit: 1 Muscular branches from the inferior rectus and inferior oblique muscles 2 The two inferior vorticose veins from the lower half of the eyeball 3 A communicating branch with the pterygoid venous plexus via the inferior orbital fissure More

What vein drains into the medial angle of the eye?

The medial angle of the eye, nose and lips (known as the danger triangle of the face) usually drain through the facial vein, via the superior ophthalmic vein through the cavernous sinus. An infection of the face may spread to the cavernous sinus through the superior ophthalmic vein.