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Feb 20, 2024 · The uvea is the eye’s middle layer. It is located underneath the white part of the eye (the sclera) and is composed of three parts: The iris; Ciliary body; Choroid; These structures control some eye functions, such as adapting to varying levels of light or object distances. If any structures become inflamed, the resulting condition is called ...
- Anterior chamber. The front section of the eye's interior where aqueous humor flows in and out, providing nourishment to the eye.
- Aqueous humor. The clear watery fluid in the front of the eyeball.
- Blood vessels. Tubes (arteries and veins) that carry blood to and from the eye.
- Caruncle. A small, red portion of the corner of the eye that contains modified sebaceous and sweat glands.
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Apr 29, 2023 · Here is a tour of the eye starting from the outside, going in through the front and working to the back. 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.
- Fibrous
- Vascular
- Inner
The fibrous layer of the eye is the outermost layer. It consists of the sclera and cornea, which are continuous with each other. Their main functions are to provide shape to the eye and support the deeper structures. The sclera comprises the majority of the fibrous layer (approximately 85%). It provides attachment to the extraocular muscles– these ...
The vascular layer of the eye lies underneath the fibrous layer. It consists of the choroid, ciliary body and iris: 1. Choroid – layer of connective tissue and blood vessels. It provides nourishment to the outer layers of the retina. 1. Ciliary body– comprised of two parts – the ciliary muscle and ciliary processes. The ciliary muscle consists of a...
The inner layer of the eye is formed by the retina; its light detecting component. The retina is composed of two layers: 1. Pigmented (outer) layer – formed by a single layer of cells. It is attached to the choroid and supports the choroid in absorbing light (preventing scattering of light within the eyeball). It continues around the whole inner su...
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- Bones of the orbit. The bony orbit is made out of seven bones, which include the maxilla, zygomatic bone, frontal bone, ethmoid bone, lacrimal bone, sphenoid bone and palatine bone.
- Eyelid anatomy. The eyelids are soft tissue structures that cover and protect the anterior surface of the eyeball. The anatomy of the eyelid may seem complex, but if we dissolve its multi-layered structure it is actually quite simple
- Lacrimal gland. The lacrimal gland is a part of the lacrimal apparatus, which besides the gland consists of its numerous ducts, the lacrimal canaliculi, lacrimal sac and nasolacrimal duct.
- Eye muscles. There are two groups of eye muscles: Extraocular muscles that move the eyeballs within the orbit. Intrinsic ocular muscles which are within the eyeball itself and control how the eyes accommodate.
Oct 31, 2023 · Figure 36.13.1 36.13. 1: Rods and cones: Rods and cones are photoreceptors in the retina. Rods respond in low light and can detect only shades of gray. Cones respond in intense light and are responsible for color vision. The fovea is the region in the center back of the eye that is responsible for acute (central) vision.
Nov 3, 2023 · Eyeball (Bulbus oculi) The eye is a highly specialized sensory organ located within the bony orbit. The main function of the eye is to detect the visual stimuli (photoreception) and to convey the gathered information to the brain via the optic nerve (CN II). In the brain, the information from the eye is processed and ultimately translated into ...
