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amount of light entering eye
Iris controls the amount of light entering into the eye.
Increasing the amount of light entering the eyes causes the pupils to contract. Think about it, if someone shone a flashlight into your eyes, wouldn't you try to shield them?
pupil
This would be the iris.
the diaphragm controls the amount of light entering the microscope
amount of light entering eye
Iris controls the amount of light entering into the eye.
refraction
The biconcave structure is the "lens, but his focuses the light, it does not adjust for the amount of light. The structure that adjusts for the amount of light entering the eye is the "iris"
The iris!
Pupil.
Yes
A diaphragm regulates the amount of light entering the microscope. Stage opening allows light to pass through the stage of the microscope.
Increasing the amount of light entering the eyes causes the pupils to contract. Think about it, if someone shone a flashlight into your eyes, wouldn't you try to shield them?
a device to reulate the amount of light entering the lens of a camera
The pupil