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Why do the pupil in seniors eyes not open as wide as younger eyes?
Wiki User
∙ 16y ago
cause younger people are more eager to know stuff but older people have seen ao many things in their life that they dont want to open their eyes anymore. its this or just that younger eyes are small and their pupils have to open more in order to see to the full potential of the human beings
Wiki User
∙ 16y ago
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What causes a pupil to open and shut?
Muscles.
What makes a human dazzled in the eye after being in a dark room and suddenly exposed to light?
The pupil of a human eye opens (gets large) and constricts (gets small) in response to the available light. When it is very bright, the pupil constricts to reduce the amount of light entering the eye. When it is dark, the pupil expands to capture as much light as possible. When you are waiting for your eyes "to get used to the light" of a darkened room, you are waiting for your pupils to open up. Back to your question! So there you are in the dark, your pupils open as wide as possible...and the lights come on! Way too much light floods your vision and your eyes, essentially, short-circuit (a flash of just white). You are momentarily dazzled while your brain's vision circuits (and your pupil sizes) reset.
Why does the pupil grow large in low light?
the pupil gets bigger in darkness to try and let more light in. stand in front of a mirror and covr ur eyes for 10 seconds in darkness and open them again in light. u can watch ur pupil get smaller because there's too much light. its really freaky.
How does the size of the iris and pupil change?
It depends on how much light your eyes receive, in dark places or when you close your eyes your pupils dilate (mydriasis) to increase the ammount of light they can take in, conversely, when looking at an intense light the pupils contract (miosis) to decrease the ammount of light. This is called the photomotor reflex and involves the sympathic (mydriasis) and parasympathic (miosis) nervous pathways.
How do you open your eyes?
Answer 1Unless you sleep with your eyes open, you either wake up first or sometimes both together.Answer 2I don't know if this is true for everyone but I definitely wake up before I open my eyes.
What happens when you cannot open your eyes in the daylight with to much sun?
your iris contract to stop lights entering the pupil/preventing you from going blind.
What is the stripey pupil in a cats eyes called?
It's called an elliptical pupil, it basically is an evolutionary sight failure fail safe, though they are susceptible to cataracts it keeps there vision sharp and it allows the pupil to open and close much faster than our sorry little round pupil hehe, it's also used in there night vision, but I'm not sure how
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 a pupil to open and shut?
Muscles.
How do I open a Senior daycare center?
How do I open a daycare center for seniors?
What is the purpose of eye color?
Your eyes are like a wonderful kind of camera.They take pictures of the world around you and send the pictures to your brain. Your brain works out what your eyes are seeing. This happens from the moment that you open your eyes in the morning to when you close your eyes at night.
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.
When the light is bright the iris open so the pupil become?
Smaller.
Can people balance better with their eyes open or their eyes closed?
eyes open :)
What makes a human dazzled in the eye after being in a dark room and suddenly exposed to light?
The pupil of a human eye opens (gets large) and constricts (gets small) in response to the available light. When it is very bright, the pupil constricts to reduce the amount of light entering the eye. When it is dark, the pupil expands to capture as much light as possible. When you are waiting for your eyes "to get used to the light" of a darkened room, you are waiting for your pupils to open up. Back to your question! So there you are in the dark, your pupils open as wide as possible...and the lights come on! Way too much light floods your vision and your eyes, essentially, short-circuit (a flash of just white). You are momentarily dazzled while your brain's vision circuits (and your pupil sizes) reset.
How are you able to see things?
open your eyes open your eyes
When do ospreys open their eyes?
They open their eyes after 2 weeks
