What is hyaloid artery?
What is hyaloid artery?
The hyaloid artery is a branch of the ophthalmic artery, which is a branch of internal carotid artery. It is present in the optic canal and extends from the optic disc to the crystalline lens via the vitreous humour.
What happens to the hyaloid artery?
The hyaloid artery (a branch of the primitive dorsal ophthalmic artery) passes through the optic fissure into the optic cup and provides a transient intraocular circulatory system, which later regresses as mature retinal vascularization develops.
What is the function of hyaloid membrane?
The anterior hyaloid membrane separates the front of the vitreous from the lens.
What is anterior hyaloid membrane?
The anterior hyaloid membrane (AHM) is a thin layer of protein fiber condensation that defines the anterior border of the vitreous body [1]. Naturally, the AHM is firmly attached to the posterior lens capsule forming the ligament of Weiger and the retrolental patellar fossa.
What is the origin of the ophthalmic artery?
The ophthalmic artery usually originates from the internal carotid artery after it pierces the dura, emerging from the cavernous sinus on the medial side of the anterior clinoid process. Abnormal origins of the ophthalmic artery are closely related to its embryological anastomoses.
What is a Hyaloid Canal?
Hyaloid canal (Cloquet’s canal and Stilling’s canal) is a small transparent canal running through the vitreous body from the optic nerve disc to the lens. In the fetus, the hyaloid canal contains a prolongation of the central artery of the retina, the hyaloid artery, which supplies blood to the developing lens.
Which structure does hyaloid artery create?
The hyaloid artery is a branch of the ophthalmic artery, which is itself a branch of the internal carotid artery. It is contained within the optic stalk of the eye and extends from the optic disc through the vitreous humor to the lens….
| Hyaloid artery | |
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| FMA | 77670 |
| Anatomical terminology |
What is the function of the hyaloid artery?
Hyaloid artery. The hyaloid artery is a branch of the ophthalmic artery, which is itself a branch of the internal carotid artery. It is contained within the optic stalk of the eye and extends from the optic disc through the vitreous humor to the lens. Usually fully regressed before birth, its purpose is to supply nutrients to…
When does the hyaloid artery disappear from the fetus?
The hyaloid artery disappears from the fetus in the ninth month of pregnancy, leaving a vestigial remnant, the hyaloid canal, which persists in the adult as a narrow passage through the vitreous body from the optic disc to the posterior surface of the crystalline lens.
What is the hyaloid canal in the eye?
hyaloid canal A channel in the vitreous humour, running from the optic disc to the crystalline lens. In fetal life this canal contains the hyaloid artery, which nourishes the lens, but it usually disappears prior to birth. Syn. central canal; Cloquet’s canal; Stilling’s canal.
What are freefree remnants of hyaloid artery?
Free remnants can sometimes be seen as ” floaters “. An anterior remnant of the hyaloid artery can be seen in some people as Mittendorf’s dot, a small pinpoint-like scar on the posterior surface of the lens. A posterior remnant may be seen where the artery left the optic disc, and is known as Bergmeister’s papilla.
