Eyes
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The eyes are the organs of vision that enable humans and other animals to detect light and differentiate between forms, colors, and patterns. The cornea, iris, pupil, lens, and retina are only a few of the many structures that make up the eyes.
The Eye's Anatomy
- The eye is a complex organ composed of a number of structures and components, including:
- The clear outer layer of the eye that helps to focus incoming light is called the cornea.
- Iris The colorful portion of the eye that regulates pupil size.
- The aperture in the middle of the iris via which light enters the eye.
- The transparent, flexible structure that focuses light onto the retina.
- The layer of light-sensitive cells at the back of the eye that turns light into electrical impulses for transmission to the brain.
- The nerve responsible for transmitting visual information from the retina to the brain.
Eye Functionality
- The eyes serve various crucial purposes, including:
- Vision The eyes enable us to sense light and differentiate between forms, hues, and patterns.
- The eyes operate together to give depth perception, which enables us to assess distances and perceive three-dimensional things.
- The eyes contain specialized cells that aid in the regulation of the circadian rhythm, or internal clock, of the body.
- The eyes play a significant part in the expression of emotions such as happiness, sadness, and fear.
Common Eye Disorders
- Many common eye disorders can negatively impact the health and function of the eyes, including:
- Myopia is a condition in which distant items look hazy but close objects stay distinct.
- Hyperopia (farsightedness) is a condition in which nearby items look hazy but distant ones are distinct
- Astigmatism is a disorder in which the cornea is deformed, resulting in vision that is distorted or hazy.
- Cataracts are a disorder in which the lens of the eye gets hazy and causes blurred or poor vision.
- A set of disorders that damage the optic nerve, resulting in vision loss or blindness; glaucoma.
Also see
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