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human eye, in humans, specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus. Structures auxiliary to the eye. The orbit.
Apr 29, 2023 · 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 human eye is an organ of the sensory nervous system that reacts to visible light and allows the use of visual information for various purposes including seeing things, keeping balance, and maintaining circadian rhythm.
- Conjunctiva. The conjunctiva is the membrane covering the sclera (white portion of your eye). The conjunctiva also covers the interior of your eyelids.
- Sclera. The sclera is sometimes known as the “whites” of the eye, covering more than 80% of the eyeball’s surface.2 The sclera has a smooth and white exterior but is brown on the inside.
- lris. The iris is the colored part of the eye and is unique to each person. This structure is located in the front of the eye, between the cornea on the outside and the lens on the inside.
- Pupils. The pupil is seen as a black dot in the center of the iris. The pupil is essentially a hole that allows the eye to focus on the things in front of it.
- Anterior chamber. The front section of the eye's interior where aqueous humor flows in and out, providing nourishment to the eye.
- Aqueous humor. The clear watery fluid in the front of the eyeball.
- Blood vessels. Tubes (arteries and veins) that carry blood to and from the eye.
- Caruncle. A small, red portion of the corner of the eye that contains modified sebaceous and sweat glands.
Nov 15, 2023 · Your eyes are a key sensory organ, feeding information to your brain about the outside world. Your eyes do the “physical” part of seeing. The signals they send allow your brain to “build” the picture that you see. Eye-related symptoms are also key clues to issues affecting your whole body, so experts recommend making eye health a priority.
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An eye is a sensory organ that allows an organism to perceive visual information. It detects light and converts it into electro-chemical impulses in neurons (neurones). It is part of an organism's visual system.
