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Eyes

The eyes are organs. They detect light, regulate the light through a diaphragm, focuses it through adjustable lenses and converts them into electo-chemical impulses in our neurons by photoreceptor cells called rods and cones. The image is converted into a set of electrical signals that are transmitted to the brain via neural pathways that connect the eye to the optic nerve and visual cortex of the brain. In short, eyes are very complex optical systems that convert light to distinguish objects and movement around us.

500 Questions

Does eye color affect reaction time?

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Asked by Wiki User

There is no direct scientific evidence to suggest that eye color directly affects reaction time. Reaction time is more likely influenced by factors such as genetics, age, and cognitive abilities. Any correlation between eye color and reaction time would likely be coincidental rather than causation.

Do men watch too much TV?

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Asked by Wiki User

Some men may watch too much TV if it interferes with other important activities or relationships in their lives. It's important for individuals to find a balance between screen time and other activities to maintain overall well-being.

Why do your pupils constrict?

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Asked by Wiki User

Pupils constrict in response to bright light to reduce the amount of light entering the eye and protect the sensitive retina from potential damage. Conversely, pupils dilate in dim lighting conditions to allow more light into the eye for improved vision in low-light environments.

What does it mean when ones pupil is small?

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Asked by Wiki User

A small pupil size can be caused by factors such as bright light, medication, or medical conditions affecting the nervous system. It can also be a sign of a neurological disorder or injury. If you notice persistent small pupils, it is advisable to consult a healthcare professional for further evaluation.

Is the pupil a physical structure of the eye?

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Asked by Wiki User

Yes, the pupil is a physical structure of the eye. It is the black circular opening in the center of the iris that regulates the amount of light entering the eye. The size of the pupil adjusts in response to lighting conditions to help maintain optimal vision.

Why is the part of your eye excluding pupil white?

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Asked by Wiki User

The white part of the eye is called the sclera. It is made up of tough connective tissue that helps protect and support the eye. The sclera is white to provide a stark contrast against the colored iris and pupil, which helps with light reflection and vision.

What are your pupils?

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Asked by Wiki User

Pupils are the small, dark circular openings in the center of the iris that allow light to enter the eye. They regulate the amount of light entering the eye by adjusting their size in response to the brightness of the environment.

Where is the pupil in your eye?

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Asked by Wiki User

The pupil is the opening in the center of the iris (the colored part of the eye) that allows light to enter the eye. By dilating or constricting, the pupil controls the amount of light reaching the retina at the back of the eye.

Who is most affected by breast cancer?

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Asked by Wiki User

Women are most affected by breast cancer, with the vast majority of cases occurring in females. However, it is important to note that men can also be affected by breast cancer, although it is much less common.

How many pupil are in an eye?

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Asked by Wiki User

There is one pupil in each eye. The pupil is the opening in the center of the iris that allows light to enter the eye. Its size can change depending on the lighting conditions to regulate the amount of light entering the eye.

How do you get brown eyes?

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Asked by Wiki User

Eye color is determined genetically. Different pigments determined by your genes color the muscle of your iris. There are contact lenses that can alter eye color (as long as they're on) into even unnatural colors, such as purple.

What is the main function of the pupil of the eye?

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Asked by Wiki User

The pupil serves two important functions - to control the illumination in the eye, and to improve the optical quality of the image on the retina. The first function is obvious - the smaller the hole, the less light gets in. It therefore serves to regulate the light level within the retina. The second function is very important because as the pupil gets larger, more aberrations are created and the image on the retina gets "messier". People with no iris (aniridia) have very poor visual acuity because the eye can't get a sharp image, both because there is to much light (over-saturation) and because there are lots of optical aberrations present. One final function of the pupil is to increase depth of focus, similar to an aperture stop on a camera. This basically increases the range (distance) over which things appear sharp.

Nevrous system controlling heart pupils of the eye etc?

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Asked by Wiki User

The nervous system controls the heartbeat by sending electrical signals through the heart's specialized cells. Pupil size is regulated by the autonomic nervous system, with the sympathetic system dilating the pupils and the parasympathetic system constricting them. Overall, the nervous system plays a crucial role in regulating various bodily functions, including heart rate and pupil size, to maintain homeostasis.

Why are eye pupils colored?

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Asked by Wiki User

The color of the pupil is due to the presence of pigments in the iris of the eye. The concentration and distribution of these pigments determine the color of the pupil, which can range from light blue to dark brown. The pigments help regulate the amount of light entering the eye by adjusting the size of the pupil.

If mother have green eyes and father has dark brown eyes grandmother has blue eyes and grandfather has brown eyes what color might the child have?

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Asked by Wiki User

The child could have green eyes, dark brown eyes, or blue eyes based on the genetic combinations of the eye color alleles inherited from the parents and grandparents. The specific outcome would depend on the exact combination of alleles passed down to the child.

What age group is most affected by breast cancer?

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Asked by Wiki User

Breast cancer mainly affects women, with the majority of cases occurring in individuals over the age of 50. However, younger women can also develop breast cancer, with a small percentage of cases occurring in women under 40. Regular screening is important for early detection and treatment.

What is the Stages of illness behavior?

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Asked by Wiki User

The stages of illness behavior include the onset of symptoms, perceiving the symptoms and deciding whether they are serious, seeking information about the symptoms and possible causes, seeking help from healthcare professionals, and complying with treatment recommendations. These stages reflect the process individuals go through from recognizing symptoms to seeking appropriate care.

Why do eyes go bad if humans are able to evolve?

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Asked by Wiki User

The decline in eyesight with age is due to changes in the lens and muscles of the eye, not evolution. Evolution is a slow process that occurs over generations, not within a single individual's lifetime. Factors like genetics, environment, and lifestyle choices can contribute to changes in eyesight.

What long term effect does alcohol have on your eyes?

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Asked by Wiki User

Long-term alcohol consumption can lead to vision problems such as blurry vision, decreased depth perception, and an increased risk of developing conditions like cataracts and age-related macular degeneration. Alcohol can also impair the optic nerve function, leading to difficulties in processing visual information.

When is a human eye fully developed?

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Asked by Wiki User

A human eye is typically fully developed by the age of seven. However, vision and eye coordination continue to mature throughout childhood and into early adulthood.

What is dawn syndrome in the eye?

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Asked by Wiki User

There is no specific medical condition known as "dawn syndrome" in the eye. It may be a typographical error or a misunderstanding. If you are referring to a different term or condition, please provide more information so I can assist you better.

Why do Chinese have slanted eyes?

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Asked by Wiki User

i have been to china several times and never seen any slant eyed Chinese. i am not blind either. i found a beautiful slant eyed lady in Panama city beach i asked her where was she from in china,she said oh i am from turkey.

Is sectoral heterochromia dangerous?

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Asked by Wiki User

Sectoral heterochromia is usually not dangerous and is simply a variation in eye color where one sector of the iris is a different color from the rest. It is typically a benign condition and does not cause any vision problems or health issues. However, if there are other accompanying symptoms or changes in vision, it is important to consult an eye care professional for further evaluation.

What is dacryocystitis?

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Asked by Getacar

Dacryocystitis is an infection or inflammation of the lacrimal sac, which is the tear drainage system in the eye. It typically presents with redness, swelling, and tenderness near the inner corner of the eye. Treatment may involve antibiotics or surgery to clear the blockage in the tear duct.

Irritative dry eye and dry eye disease?

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Asked by Wiki User

I DONT HAVE THE ANSWER! can i get an answer? Why r u asking me 4 the answer?