YES
The size of the pupil in the human eye is controlled by the iris, which is a ring of muscle that can expand or contract to adjust the size of the pupil.
The size of your pupil can be affected by factors such as emotions (like fear or excitement), medication use (such as opioids or stimulants), age (pupils tend to get smaller with age), and certain medical conditions (like an eye injury or brain trauma).
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Eye trauma can damage the muscle that controls pupil size.
size of pupil becomes larger when you see in dim light
The iris, specifically the muscles within it, control the size of the pupil. Contraction and relaxation of these muscles regulate the amount of light entering the eye by adjusting the diameter of the pupil.
No. The pupil can only open to the size of the iris.
The iris is the layer that surrounds the pupil and controls the size and diameter of the pupil. It also controls the amount of light that reaches the pupil.
The pupil size is controlled by the iris muscles. In bright light, the iris constricts the pupil to reduce the amount of light entering the eye. In dim light, the iris dilates the pupil to allow more light to enter. Emotional responses or changes in focus can also affect pupil size.
In the Glasgow Coma Scale, pupil size is typically observed before applying light stimulation. This is done to assess the initial baseline size of the pupil before assessing how it reacts to light, which is an important indicator of neurological function.
iris