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When a light is not shined into an eye the pupil contracts gets bigger because the eye needs all the light being presented to it. If the light is not taken away the pupil does not dilate.

PS like the eye gets smaller in the light.

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14y ago

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Related Questions

In a bright light the pupil in your eye will?

When exposed to a bright light, the pupil of the human eye will contract. This action allows less light to come in contact with the lens.


What happened to the pupil of the eye exposed to light?

When the pupil of the eye is exposed to light, the muscles surrounding the pupil contract, causing it to constrict. This helps to reduce the amount of light entering the eye and minimizes glare, allowing for better focus and vision in bright conditions.


What happens to light rays after they enter the pupil?

They die.


What happens to your pupil when in a light room?

it gets bigger


What happens if the pupil doesn't work?

If the pupil of the eye did not work, than your eye could not regulate light entering it.


What happens to the lensecornea and pupil when lights hits it?

Nothing. AFTER the light is detected and calibrated, the pupil may change size.


What is an Argyll Robertson pupil?

An Argyll Robertson pupil is a bilateral small pupil of the eye which reduces in size when the patient focuses on a near object but does not constrict when exposed to bright light - a sign of neurosyphilis.


When does pupil contract?

The pupil contracts in response to bright light to limit the amount of light entering the eye. It dilates in low light conditions to allow more light to enter the eye for improved vision. This process is controlled by the iris muscle.


When the eyes exposed to bright they get smaller or larger?

When exposed to bright light, the pupil constricts or gets smaller to reduce the amount of light entering the eye. This is a natural response to protect the eyes from excessive light and help improve visual acuity in bright conditions. Conversely, in dim lighting, the pupil dilates or gets larger to allow more light in for better visibility.


What happens to the pupil and iris when it is in dim or low light?

In dim or low light conditions, the pupil dilates, or enlarges, to allow more light to enter the eye, enhancing vision. This process is controlled by the iris, which is the colored part of the eye; it relaxes to widen the pupil. The increased light intake helps improve visibility in dark environments. Conversely, in bright light, the pupil constricts to protect the retina from excessive light exposure.


What does bright light do to the pupil?

in bright light the pupil shrinks


How does light affect the pupil of the eye?

Light causes the pupil to constrict in bright conditions to reduce the amount of light entering the eye, and dilate in dim conditions to allow more light to enter. This pupillary response is controlled by the autonomic nervous system to regulate the amount of light reaching the retina for optimal visual functioning.

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