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Introduction to the Eye

Eye health is an important part of overall health. It’s crucial to childhood development and independent aging for adults. Most people depend on clear vision. It helps them participate in their occupation, hobbies, and even to perform most everyday tasks. If any part of your visual system is not working, or not conveying the appropriate messages to your brain, vision suffers.

Our eyes allow us to appreciate the beauty of the world, experience the joy of learning new activities, and undertake new adventures. Knowing the anatomy of your eyes and having regular exams is the best way to keep your eyes healthy and your vision intact.

Parts of the Eye

The Sclera: The white part of the eye is the opaque, fibrous, protective outer layer.
The Pupil: The hole located in the center of the iris. It allows light to enter the eye. The pupil appears black because light rays entering the pupil are absorbed by the tissues inside the eye.
The Iris: A thin, circular structure in the eye. It controls the diameter and size of the pupil. The color of the iris is often referred to as eye color.
The Cornea: The transparent front part of the eye that covers the iris, pupil, and anterior chamber. Along with the lens, it refracts light, accounting for approximately two-thirds of the eye’s total optical power.
The Crystalline Lens: A transparent and biconvex structure. It helps refract light to focus on the retina. By changing shape, it functions to change the focal distance of the eye to focus on objects at various distances.
The Retina: A light-sensitive layer of tissue lining the surface of the eye. It captures light and creates an image by triggering nerve impulses that pass to the brain via the optic nerve.
The Macula and Fovea: Small areas within the retina that contain the rods and cones. These structures determine the color and shape of the image you are viewing.

Regular eye exams are the best way to ensure these structures are functioning correctly. Contact us today to schedule your next appointment.

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James W. Webb, O.D.
Webb Eye Care at Hoover

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Webb Eye Care at Alabaster

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