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What else can I help you with?
Does the iris controls the size of the pupil?
The iris is like a contractile structure of smooth muscles which surround the pupil. The sphincter pupillae, one of the smooth muscles categories of the eye, causes constriction of the pupil. The dillator pupillae, the other category of smooth muscles of the eys, causes the pupil to dilate.
Does the pupil dilate when focusing for near vision?
Yes, the pupil constricts when focusing for near vision due to the action of the ciliary muscles, which causes the lens to thicken in order to focus on nearby objects.
Why can't I shut my right eye while keeping my left eye open?
When you try to shut one eye while keeping the other open, it is because of a reflex called the consensual reflex. This reflex causes both eyes to move together, making it difficult to shut one eye while keeping the other open.
A bright light that causes you to shut your eyes is a?
A bright light that causes you to shut your eyes is called a glare. A glare is harmful in that light enters your eye, but doesn't help you see.
When you shine a light into one pupil the normal reaction of the other pupil should be?
Constriction. When light shines into one pupil, the pupillary light reflex causes the other pupil to constrict due to the connection between the two pupils through the optic nerve and brainstem. This reflex helps regulate the amount of light entering the eye to maintain optimal vision.
What causes difference in the coloration of your eye pupil?
The pupil is allways black. The iris is the colored part.
What causes the pupil to shrink?
the light that gets into it
What is open when it is shut and shut when it is open?
an umberella
Is it possible for your pupil to grow bigger than your iris?
No. The pupil can only open to the size of the iris.
What causes blood in the pupil?
touching urself at night
What is open when it's shut and shut when it's open?
Tower Bridge
What causes the pupil of the eye to get very small?
dilating
Does the iris controls the size of the pupil?
The iris is like a contractile structure of smooth muscles which surround the pupil. The sphincter pupillae, one of the smooth muscles categories of the eye, causes constriction of the pupil. The dillator pupillae, the other category of smooth muscles of the eys, causes the pupil to dilate.
What does the ciliospinal reflex do to the pupil of the eye?
The pupil dilates when stimulated by the pinching on the nape of the neck.
When the light is bright the iris open so the pupil become?
Smaller.
What is an example of dilation?
An example of dilation might include the changes in a hose as water pressure builds and the hose expands. Dilation also occurs when darkness causes the pupil in the human eye to open.
What causes the pupil to constrict and dilate?
The pupils of your eyes become smaller due to light. When it is dark, the pupil opens wider to allow more light in so that it is easier for us to see. When it is bright, the pupil contracts in order to keep too much light from damaging the sensitive parts in the back of the eye. It has also been noted that drugs, such as hallucinogens and opiates can cause a change in the size of the pupil, usually making them open wider despite the level of light.
