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To understand the diseases and conditions that can affect the eye, it helps to understand basic eye anatomy. Here is a tour of the eye starting from the outside, going in through the front and working to the back.
The structures and functions of the eyes are complex. Each eye constantly adjusts the amount of light it lets in, focuses on objects near and far, and produces continuous images that are instantly transmitted to the brain.
The structures of the eye include the cornea, iris, pupil, macula, retina, and the optic nerve.
Your eye structure lets light enter and pass through a series of clear components and sections, including the cornea, aqueous humor, lens and vitreous humor. Those structures bend and focus light, adjusting how far the light beams travel before they come into focus.
What Are the Different Parts of the Eye? The human eye is a complex organ composed of several interconnected parts, each with a specific function in vision. Let’s explore these components and their roles in enabling us to see the world around us. 1. Conjunctiva. The conjunctiva is the membrane covering the sclera (white portion of your eye).
Human eye, specialized sense organ in humans that is capable of receiving visual images, which are relayed to the brain. The anatomy of the eye includes auxiliary structures, such as the bony eye socket and extraocular muscles, as well as the structures of the eye itself, such as the lens and the retina.
From the muscles and tissues to nerves and blood vessels, every part of the human eye is responsible for a certain action. Furthermore, contrary to popular belief, the eye is not perfectly spherical; instead, it is two separate segments fused together.
Layer containing blood vessels that lines the back of the eye and is located between the retina (the inner light-sensitive layer) and the sclera (the outer white eye wall). Structure containing muscle and is located behind the iris, which focuses the lens.
The inner layer of the eye is formed by the retina, the eye’s light detecting component and the intraoptic part of optic nerve (cranial nerve II). The retina is made up of two separate functional units: the optic and nonvisual parts .
Read on for a basic description and explanation of the structure (anatomy) of your eyes and how they work (function) to help you see clearly and interact with your world. In a number of ways, the human eye works much like a digital camera: Light is focused primarily by the cornea – the clear front surface of the eye, which acts like a camera lens.