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The superior ophthalmic vein drains venous blood from structures of the upper orbit. [2] The superior ophthalmic vein forms/represents a connection between facial veins, and intracranial veins. It is valveless. [3] The superior ophthalmic vein is the largest and the most consistently present vein of the orbit. It usually measures 2-10 mm in ...
Arteriovenous nicking, also known as AV nicking, is the phenomenon where, on examination of the eye, a small artery is seen crossing a small vein (), which results in the compression of the vein with bulging on either side of the crossing.
The vorticose veins, referred to clinically as the vortex veins, [1] are veins that drain the choroid of the eye. There are usually 4-5 vorticose veins in each eye, with at least one vorticose vein per each quadrant of the eye. Vorticose veins drain into the superior ophthalmic vein, and inferior ophthalmic vein. [2]
The supraorbital vein is a vein of the forehead. It communicates with the frontal branch of the superficial temporal vein. It passes through the supraorbital notch, and merges with the angular vein to form the superior ophthalmic vein. The supraorbital vein helps to drain blood from the forehead, eyebrow, and upper eyelid.
The central retinal vein (retinal vein) is a vein that drains the retina of the eye.It travels backwards through the centre of the optic nerve accompanied by the central retinal artery before exiting the optic nerve together with the central retinal artery to drain into either the superior ophthalmic vein or the cavernous sinus.
Ophthalmic veins are veins which drain the eye. More specifically, they can refer to: ... Text is available under the Creative Commons Attribution-ShareAlike 4.0 ...
Schlemm's canal, also known as the canal of Schlemm, and as the scleral venous sinus, is a circular lymphatic-like vessel in the eye. It collects aqueous humor from the anterior chamber and delivers it into the episcleral blood vessels. Canaloplasty may be used to widen it.
An allergic shiner is a dark discoloration below the eye that is associated with allergic rhinitis and is often seen in conjunction with bilateral Dennie–Morgan folds. These shiners are caused by venous congestion within the infraorbital groove , particularly from the nose .