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The size of pupil is reduced with bright light and vise verse. This is managed by reflex action. Parasympathetic nerve stimulation constricts the pupil. Sympathetic nerve stimulation dilates the pupil.
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∙ 9y ago
Wiki User
∙ 12y agoThe whole process is actually quite complicated, but the iris controls the amount of light entering the eye.
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What controls the amount of light reaching the retina?
the iris controls the amount of light by limiting the volume of light admitted through the iris.
Which structure controls how much light enters the eye?
Behind the cornea and in front of the lens is the iris, the circular pigmented band around the pupil. The iris works much like the diaphragm in a camera, widening or narrowing the pupil to adjust to different light conditions.It is made of sphincter and dilator muscles of the pupil.
Which part of the human eye controls how much light enters?
the iris
What part of the eye controls the amount of light passing into the eye?
The pupil constricts or dilates depending on how much light is available. The pupil's function is controlled by our autonomic nervous system.
How does the iris control how much light enters the eye?
The iris is the coloured membrane in the eye that controls the amount of light entering the eye by expanding and contracting. The pupil is a hole in the centre of the iris. By expanding, more light will enter the pupil and by contracting less light will enter the pupil.http://en.wikipedia.org/wiki/Iris_(anatomy)
What controls the amount of light reaching the retina?
the iris controls the amount of light by limiting the volume of light admitted through the iris.
Which structure controls how much light enters the eye?
Behind the cornea and in front of the lens is the iris, the circular pigmented band around the pupil. The iris works much like the diaphragm in a camera, widening or narrowing the pupil to adjust to different light conditions.It is made of sphincter and dilator muscles of the pupil.
What is the name of the eye that controls how much light passes through the pupil is called the?
the colored part of human eye that controls how much light passes through the pupil is called the?
What part is responsible for controlling the size of the pupil?
The size of the eye's pupil controls that amount of light entering the eye and then falling on the retina. As a consequence the diameter of the pupil also controls the depth of field (how much in front of you is in focus) of the image. In bright light the pupil is small and the depth of field is wide. in dark condition the diameter of the pupil opens up and more light enters the eye but the depth of field is narrow.
The colored part of the human eye that controls how much light passes through pupil is called?
the colored part of the human eye the controls how much light passes through the pupil is calles the
How is a pupil of a human structured?
The pupil is the center round black part of the eye. This is where the light enters into the retina. The human pupil works much like the aperture of a camera.
Which part of the human eye controls how much light enters?
the iris
Colored part of human eye that controls how much light passes through pupil is?
It is the iris.
What part of the eye controls the amount of light passing into the eye?
The pupil constricts or dilates depending on how much light is available. The pupil's function is controlled by our autonomic nervous system.
The coloured part of the human eye that controls how much light passes through the pupil is called what?
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How does the iris control how much light enters the eye?
The iris is the coloured membrane in the eye that controls the amount of light entering the eye by expanding and contracting. The pupil is a hole in the centre of the iris. By expanding, more light will enter the pupil and by contracting less light will enter the pupil.http://en.wikipedia.org/wiki/Iris_(anatomy)
How do people see?
First, light passes through the transparent cornea. It then reaches the pupil. This expands or contracts depending on the amount of light that enters the eye. The iris controls the size of the pupil, to regulate how much light reaches the lens. The lens bends light rays and focuses them on the back of the eye, or the retina. The retina, then, changes light into nerve impulses through a complex process. These impulses are transmitted along the optic nerve to the brain, which interprets the impulses as images.
