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Does Eye Color Affect a Persons Night Visions ?

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Andrea Williams

on 30 January 2014

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Transcript of Does Eye Color Affect a Persons Night Visions ?

Can you see it ?
Have you ever wondered why someone might be able to see better in the dark then yourself? In our experiment,we tested to see which eye color would have the best Visibility in the dark. The eye colors tested were Brown,Green and Blue.
Project Purpose
The purpose for conducting this project would be because it would solve how some people are unable to see in certain light settings and how far they are able to see when put in dark areas.
We think that the lighter the eye color, the better your visibility would be in the dark. This is because the lighter the eye shade, the better your eyes adjust to the darkness. Making it easier for you to see when placed in dark areas.
How Does My Eye Work?
Your vision begins when lights are
reflected off of an object and enters
the eye through the cornea
(the transparent layer forming the
front of the eye.)

The cornea bends the light that pass
through the pupil and the iris (the colored
part of your eye) opens and closes to control
the amount of light coming through.

The light then pass through your lens
(the part of the eye that changes shape
so it can continue to bend the rays and focus them on the retina)
Through our experiment, we tested three different eye colors and used all eyes to see who could see the best and furthest in the dark. When doing our testings, we made sure that each participant had 20/20 vision .
Does Eye Color Affect a Persons Night Visions ?
By: Andrea W. Wyatt C. Monesha A.
Retina (a layer at the back of the eyeball that is sensitive to light)Cones are concentrated in the center of the retina, an area called the Macula. When put in bright light situations, cones provide clear, sharp central vision and detect colors.

Rods (a visual receptor cell that is sensitive to dim light) provide peripheral vision. They also allow the eyes to detect motion and to help see at night.
How does My Eye Work ?
Why is my Eye this Color ?
Eye color is determine between two distinct factors:The pigmentation of the iris of the eye and the frequency-dependency of the scattering of the light.

Green Eyes
Brown Eyes
Blue Eyes
Mickey Mouse
Meauring Tap
7:00 p.m (Eastern Standard Time)


To complete this experiment,We gather three participants who all had three different eye colors (being Brown,Blue, & Green). After finding the participants,we set up a thirty foot long line, and divided it up by fives. Starting with five feet, then to ten feet, then to fifteen feet, to twenty feet, twenty-five feet, and lastly thirty feet. Around 7:00 p.m (eastern standard time) we had participants stand together and held up a doll at each line. Starting at the five feet mark we asked each person were they able to see the figure. Repeating this step, we moved further and further down the line. Going to ten feet, fifteen feet, twenty feet,twenty five feet and thirty feet. Again, at each mark asking could the participant see the figure. After asking the question, we gathered our data and put it together in a graphed chart.
During our Observation, we saw that Blue eyes were able to see better in the dark. While performing our experiment, and graphing all the data, Blue eyes were able to see the furthest. Next being brown eye, and then lastly green. In our graphs, we aliged the eyes colors up and compared them each to one another. While on another graph, we compared the averages to see who really could see the furthest. This proving that the hypothesis that the lighter the eye color, the better your visibility would be in the dark is accepted. This is because the lighter the eye shade, the better your eyes adjust to the darkness. Making it easier for you to see when placed in dark area is correct. Allowing only a certain amount of light to enter the eye.
In Conclusion, when doing this project we wanted to test to see if eye color had an affect on a person when trying to see in the dark. After testing the experiment and putting together all data, we conclude that eye color does has an affect on how well you see in the dark. Our final conclusion was that Blue eyes could see the best and the furthest in the dark, followed by brown and then by green.
A green allele is dominant over a blue allele, and a brown allele is dominant over both green and blue alleles. For the bey 2 gene if a person has a brown allele then they will have brown eyes. In the gey gene the green allele is dominant over the blue allele, but it is still recessive next to a brown allele.

For example if a person has a brown allele on chromosome 15, but all the other alleles are blue or green, they will have brown eyes. A green eyed person would have a green allele on chromosome 19 and all or some other blue alleles. Blue eyes are produced only with two blue eye genes. All four alleles must be blue to produce a blue eyed person.
When thinking genetics and how you originally have your eye color its when a baby get one chromosome from each parent in each pair of chromosomes. The DNA that the baby gets from one parent determines what color eyes the baby will have. A recessive trait is hidden unless you have two genes for one trait. A dominant trait will show if you have one or two genes for the trait.
Why is my eye this color?
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