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APPLICATION OF LENSES; THE HUMAN EYE; THE CAMERA
CONTENT
- The Human Eye
- Description of the Human Eye
- Eye Defects
- The Camera
- Comparison of the Human Eye with the Camera
The Human Eye
Description of the Human Eye
The human eye is a very sensitive organ of the body, it is protected by a ring of bones or socket, eye lids and eye lashes. The diagram below shows the essential parts of the human eye.
The Human Eye
The eye lens focus light entering the eye onto the retina. The ciliary muscle is attached to the eye lens and changes the shape of the lens in accordance with the distance of the object in focus. The retina is a light sensitive area located at the back of the eye. It acts as a screen. The yellow spot on the retina is the most sensitive spot to light. The least sensitive portion is the blind spot. The retina is connected to the brain by the optical nerves.
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