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Anatomy of The Eye PowerPoint Presentation

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Description : Check out this medical PowerPoint presentation titled "Anatomy of the eye”.

This medical PowerPoint presentation is about the eye, a complex organ responsible for vision. It consists of several structures that work together to detect and transmit visual information to the brain. Heres a brief overview of the anatomy of the eye:

Cornea: This is the clear, dome-shaped outer layer of the eye that helps to focus light onto the retina. It also helps to protect the eye from dust, debris, and other foreign particles.
Iris: This is the colored part of the eye that controls the size of the pupil and regulates the amount of light that enters the eye.
Pupil: This is the black circular opening in the center of the iris that allows light to enter the eye.
Lens: This is a transparent, flexible structure located behind the iris that helps to focus light onto the retina.
Retina: This is the innermost layer of the eye that contains light-sensitive cells called photoreceptors, which convert light into electrical signals that are transmitted to the brain via the optic nerve.
Optic nerve: This is a bundle of nerve fibers that carries visual information from the retina to the brain.
Vitreous humor: This is a gel-like substance that fills the space between the lens and the retina, helping to maintain the shape of the eye.
Sclera: This is the white, outer layer of the eye that provides support and protection for the internal structures of the eye.
Choroid: This is a layer of tissue located between the retina and the sclera that provides blood supply to the retina.
Conjunctiva: This is a thin, transparent membrane that covers the front surface of the eye and the inside of the eyelids. It helps to protect the eye from infection and lubricates the eye.

Tags : eye, Cornea, Iris, Pupil, Lens, Retina, Optic nerve, Vitreous humor, Sclera, Choroid, Conjunctiva, Ophthalmology, Ophthalmology PowerPoint presentation

Published on : Jun 20, 2023 | Views : 1742 | Downloads : 0

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Transcript

Slide 1-

Anatomy of the eye.
Slide 2-

The Eye: The eyes are the organs of the special sense of sight. They sit in the orbit of the skull which provides them with positional protection. Humans have two eyes which work together, this is known as binocular vision.
Slide 3-

The eyeball. The eye ball is globe shaped and made of three main layers: An outer layer which is fibrous and protective A middle layer which contains many blood vessels An inner layer known as the optic part of the eye Consider which parts of the eye can be seen. Can you name any parts of the eyeball? What differences can you see between your eyes and those of people around you?
Slide 4-

The outer layer of the eyeball: What was the function of the outer layer? The fibrous layer is divided into two parts: Five-sixths of the eye is known as the sclera which is the white of the eye you can see. At the front of the eye the sclera becomes the cornea which is transparent and allows light to enter the eye.
Slide 5-

The middle layer: The middle layer contains many blood vessels such as arteries and veins. Within this layer there are also muscles (ciliary muscles) and at the front of the eyeball, the iris. The iris is a circular, coloured structure which has a central opening called the pupil. Muscles within the iris are responsible for changing the size of the pupil in different conditions.
Slide 6-

Pupil size Can you think of any times when your pupils have changed size? In order to control the amount of light entering the eye, the pupil can become smaller or larger. Muscles in the iris are arranged in differing ways to allow this to happen.
Slide 7-

Constriction A circular pattern of muscle (the sphincter pupillae muscle) when contracted decreases the size of the pupil. This is constriction. This happens in light situations.
Slide 8-

Dilation A radial pattern of muscle (the dilator pupillae muscle) when contracted increase the size of the pupil. This is dilation. This happens in dark situations.
Slide 9-

The inner layer of the eyeball The inner layer of the eyeball is known as the retina which is sensitive to light. On the retina there are some obvious features: The optic disc is where the optic nerve leaves the retina to carry information to the brain. This is not sensitive to light and is sometimes referred to as the blind spot. The fovea is the thinnest area of the retina and is the most sensitive part of the eye. This is because there are a lot of cells known as cones in this area.
Slide 10-

Rods and cone cells
Slide 11-

The Lens.
Slide 12-

Movement of the eye.