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Testing the Relationship Between Eye Color and Sight

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Amanda Wood

on 24 April 2014

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Transcript of Testing the Relationship Between Eye Color and Sight

Testing the Relationship Between Eye Color and Sight
Question & Hypothesis
Q: Does Eye Color Affect a Person's Ability to Identify Color in Low Light?

Hypothesis: If we ask blue, green and brown eyed subjects to identify colors in a low lit room, then
blue eyed subjects will be able to identify the colors the best.
Eye Anatomy
Major parts:
Gathered test subjects with blue, green and brown eyes.
Selected paper, taped to wall. (orange, red, green, yellow, blue)
Made two different rows on two different walls, random order.
Tested one subject at a time.
Recorded answers.
After two minutes, subjects identified other wall
Recorded their answers.
Repeated steps 4-8 with each test subject .
Analyzed the results.

Sources of Error
Light inconsistency
Subject waited too long to read the colors (adaptation)
According to data... Blue-eyed subjects performed better.
Possibly due to melanin pigment in iris (little research available).
Hypothesis supported.
Procedure & Results
Dim lit room (library closet)
Black blindfold
Colored construction paper
Timer (cellphone)
Flashlight (cellphone)
9 Test subjects

Future Experiments
Larger subject pool
Corrective lenses
Color Blindness
What Does This Mean?
Eyes are vitally important in everyday life

Stop Signs
White border on stop sign
Assists less sensitive individuals in seeing in low light
Pupil dilation
Practice Effect
Two different orders of colors on two different walls
R to L, L to R
Graphs and Figures
Future Experiments Cont.
Human Eye Color and Reaction Time
Dark eye
= shorter reaction time
Light eye
= longer reaction time

Tedford, W. H. "Human Eye Color and Reaction Time." National Center for Biotechnology Information. U.S. National Library of Medicine, Oct. 1978. Web. 23 Apr. 2014.
Full transcript