Does Age Effect How Well A Person Sees In The Dark?

DOES AGE EFFECT HOW WELL A PERSON SEES IN THE DARK?

Brittany LutheranSharpsville Area Middle SchoolEighth Grade

QUESTIONWill the age of a person effect how well a

person can see in the dark?

MOTIVATIONThe reason I chose to do my project is that my vision is not very good, and I wanted to know once I get older if my vision would get worse. I also chose to test my subjects in the dark because darkness adds a challenge that I am

curious about.

RESEARCH Vision is the process in which light waves from an

object being looked at are registered, interpreted and stored as an image by the brain.

Various malfunctions in the process of vision may occur as a person ages.

HYPOTHESIS

If a persons age is increased, then the persons ability to see in the

dark will decrease.

MATERIALS Ten people from each age group Vision testing poster A dark room A box to cover light A night light

PICTURES

PROCEDURE1. Gather ten people from the age groups of 7-8

year-olds, 12-13 year-olds, and 39-41 year-olds.2. Have the vision testing poster, a dark room, and a

light with a cardboard box over top ready.3. Take the test subject into the room and give them

one minute to adjust their eyes without looking at the poster.

4. After one minute have them start reading the poster from top to bottom or until they cannot see anymore.

5. Record data and repeat with other test subjects.

VARIABLES AND CONTROLSIndependent Variable: The age of the

person being testedDependent Variable: How the subjects

vision will change according to age

Controls: Amount of darkness and vision testing poster

CONCLUSIONIn conclusion my hypothesis was proven

correct. The 7 and 8 year olds had an average vision of 20/20 while the 12 and 13 year olds had an average of 20/30 and 39 through 41 year olds had an average of 20/50. this happened because when we age we lose eye lubrication and decreased muscle tone which affects how well we see.

GOING FURTHERIf I were to go further with my

experiment I would test if gender effects how well a person can see.

BIBLIOGRAPHY http://womenshealth.aetna.com/WH/ihtWH/r.

WSIHW000/st.36121/t.36335.html#Changes_In_Vision