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Jun 25, 2024 · The bony orbits (or eye sockets) are bilateral and symmetrical cavities in the head. They enclose the eyeball and its associated structures. In this article, we shall look at the borders, contents and clinical correlations of the bony orbit.
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Orbital Anatomy. The orbital cavities are large bony sockets that house the eyeballs with associated muscles, nerves, blood vessels and fat. Each orbit is pear-shaped with the optic nerve representing the stem. The medial walls of the orbit are almost parallel and border the nasal cavity anteriorly. The lateral walls, however, diverge at an ...
- Orbital Foramina, Ducts, Canals, and Fissures
- Periorbital Sinuses
- Reference
Foramina
1. Optic foramen: middle cranial fossa to orbital apex, through lesser wing of sphenoid bone 1.1. Optic nerve 1.2. Ophthalmic artery 1.3. Sympathetics (from carotid plexus) 2. Supraorbital foramen/notch: medial third of superior margin of orbit 2.1. Blood vessels 2.2. Supraorbital nerve (V1) 3. Anterior ethmoidal foramen: at frontoethmoidal suture 3.1. Anterior ethmoidal vessels 3.2. Anterior ethmoidal nerve 4. Posterior ethmoidal foramen: junction of orbital roof and medial wall 4.1. Posteri...
Nasolacrimal Duct
1. Connects lacrimal fossa to inferior meatus of nose
Infraorbital Canal
1. From infraorbital groove and exits 4 mm below inferior orbital margin 2. Transmits infraorbital nerve (V2)
Route for spread of infectionInferomedial orbital strut:along inferonasal orbit, near the ostium of maxillary sinusFovea ethmoidalis: forms roof of ethmoid sinus, lateral extension of cribriform plateBasic and Clinical Science Course, Section 2. Fundamentals and Principles of Ophthalmology. American Academy of Ophthalmology. San Francisco: 2018-2019 edition, 5-11.
Read an overview of general eye anatomy to learn how the parts of the eye work together.
Apr 29, 2023 · Eye Anatomy: Parts of the Eye Outside the Eyeball. The eye sits in a protective bony socket called the orbit. Six extraocular muscles in the orbit are attached to the eye. These muscles move the eye up and down, side to side, and rotate the eye. The extraocular muscles are attached to the white part of the eye called the sclera. This is a ...
Jan 30, 2016 · The orbital floor consists of three bones: the palatine, the zygomatic, and the maxillary bones. The lacrimal fossa is formed by the maxillary and lacrimal bones, which contains the nasolacrimal duct. The inferior oblique muscle originates from the orbital floor, lateral to the nasolacrimal duct.
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Dec 22, 2022 · The orbital cavity, also known as the orbit, is a bony socket located within the skull that houses and protects the eye and its associated structures. It is an important and complex structure in the human body, playing a vital role in vision and eye movement.
