Sydney Wells
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Apr 29, 2023 · Learn about the structure and function of the eye, from the outer layers to the retina and optic nerve. Find out how the cornea, lens, iris, pupil, and vitreous help us focus and see color.
- Lens Capsule
The lens capsule is a thin membrane around the eye's natural...
- Photoreceptors
Special cells in the eye’s retina that are responsible for...
- Rods
Rods are a type of photoreceptor cell in the retina.They are...
- Cones
Eye problems that can affect cones include: Color blindness;...
- Night Vision
Night vision is the ability to see in low light conditions....
- Peripheral Retina
A number of eye problems can affect the peripheral retina...
- Meibomian Gland
Meibomian glands are oil glands along the edge of the...
- Lacrimal Gland
Located above the eye, this structure produces tears. Read...
- Lens Capsule
- Overview
- Anatomy of the eye
- Support tissues
- Eye conditions
- When to see a doctor
- Summary
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The main function of the eyes is enabling people to see. All the parts of the eye work together to allow vision. They take in light from the environment and send visual information for the brain to process.
Here is a summary of how the visual system works:
•Light passes through the cornea, a dome-shaped structure. The cornea bends the light to help the eye focus.
•The iris allows some of this light to enter the pupil.
•Light passes through the lens. With the cornea, the lens focuses the light onto the retina at the back of the eye.
•The retina converts the light signal into electrical impulses.
The only part of the eye that people can see is the front. The rest is inside the eye socket, or orbit. Muscles connected to the eyeball allow the eye to move according to the direction of the person’s gaze.
There are three main types of tissue in the eye:
•refracting tissues that focus light
•light-sensitive tissues
•support tissues
Below, we look at each of these types.
There are many support tissues in the eye, including fatty tissue. Three of these are the sclera, the conjunctiva, and the uvea.
Sclera
People commonly call this the whites of the eyes. It is fibrous and supports the eyeball, helping it keep its shape. It is attached to muscles that can move the eye in almost any direction.
Conjunctiva
The conjunctiva is a thin, transparent membrane that covers the sclera and lines the eyelids. It does not cover the cornea. Tear glands, each about the size of an almond, provide fluid that helps lubricate the eye and protect it from microbes.
Uvea
A wide range of health issues can affect the eyes. They may involve:
•genetic factors
•features a person is born with
•age
•other health conditions
Here are some examples:
A person should see a doctor if any of the following occur:
•any sudden changes, including a sudden increase in floaters
•severe pain and redness
•severe sensitivity to light
•loss of vision, double vision, or other vision changes
•an injury that affects the eye or eye socket
Vision is a complex process involving different parts of the eye and the brain.
Many people have vision problems. Some, such as cataracts, are highly treatable but can lead to vision loss without treatment.
Learn about the anatomy, function, and diseases of the eye. Find out how the eye focuses light, converts it into electrical signals, and sends them to the brain.
Eye Center of Columbus is an Ambulatory Surgery Center located in downtown Columbus at 262 Neil Avenue Suite 500., Columbus, Ohio, 43215. The Eye Center of Columbus performs over 12,000 surgeries a year.
Learn about the structures and functions of the eye, such as the cornea, iris, pupil, macula, retina, and optic nerve. Find out how they work together to produce vision and what can go wrong.
Learn how the eyes work, from the cornea to the retina, and how they adapt to different light conditions and focus on objects. Find out how the optic nerve and brain process visual information and what can go wrong with the eyes.
- James Garrity
- 1654 min
Nov 3, 2023 · Learn about the structure and function of the eye and its associated structures in the orbit. Find out the names, origins, insertions, innervations and functions of the extraocular and intrinsic muscles, the lacrimal gland, the eyelids and the bones of the orbit.
May 28, 2024 · Learn about the structure and function of the human eye, its parts, and common vision problems. The eye is a camera-type organ that converts light into electrical signals for the brain.
