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Unformatted text preview: Page 1 P Have you ever seen a doctor look into a patient's eye with an instrument called an "ophthalmoscope"? The instrument lights up the inside of the eye and magnifies the vessels of the retina in the rear of the eye. m This gives the doctor an idea about how healthy you are as he looks at all the vessels in the back of your eye. t HYPOTHESIS H I wanted to know if a person could see the blood vessels in the back of their own eye without using the instrument that the doctor uses in the eye exam. o I am really interested in eyes because I have an uncle who got in a car accident and now he is blind. I hope someday doctors can help all those who are blind to be able to see. b I guessed that a person could not see the blood vessels in the back of their own eyes. o EXPERIMENT E My experiment was not about the tiny blood vessels that you can easily see on the surface of the eye. It's to do with the larger vessels t All I had to do was take a person into a dark room with my flashlight. I had them cover their left eye and look down at the floor with their right eye. I held the flashlight up towards the ceiling under their right eye, but they kept looking at the floor, not the light. a RESULTS R I am writing down what everyone recorded for me. I am first: I JOSH: I could see black blood vessels with orange in the background...it looked like a lot of dead tree. l Page 2 P BRENDA: The blood vessels resembled jagged lighting bolts or trees in the winter time. t LAURA: I saw crooked lines that didn't stand still, but kept changing. L DARWIN: The image appeared to be in front of the body and quite enlarged. I found that it takes practice to see this. t BRYAN: Sometimes your eye gets tired before you can successfully do this, so you may have to use the other eye or take a rest and try it again. m...
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- Spring '10