Vision Lab Report

Dyala Moshtaha

Biology SL

Ms. Cardinal

January 18th, 2015

Biology Lab Report

Vision Lab

Title:

To test the efficiency of ones direct vision vs. peripheral vision

Introduction:

Studies prove that ones peripheral vision is the most effective way in terms of sight in the dark. The retina includes two forms of photoreceptor cells, the rod and cone. The cones are segments that are further sensitive to color, and the rods are better at motion detection, and are able to function well in low light environments. The rods are nearly totally responsible for our night vision. As the rods are focused throughout our retina, to use them successfully, not viewing right at what you want to see is the best way. By your peripheral vision, identifying something

Step 2: have the person stand 4 ft. away from the table and cups, and stay in that position throughout the entire experiment whether is be sitting, kneeling or standing.

Step 3: make sure the room has no light. (near darkness)

Step 4: prepare a paper and pen, and set up a table (chart) whichever war you prefer in order to record the data of is what the person identified the colors as was correct.

Step 5: have the person directly look at each cup and identify the color, and record the accuracy of their identification down.

Step 6: Next, have the person look at another area in the room, yet still being able to see the cups using their peripheral vision. Have them identify the different colors and record this data.

Step 7: Now, ask the person, which view was easier in terms of figuring out the cups color.

Step 8: Repeat steps 1-7 on 5 different people, this first trial included.

Data/Result:

Color identification: (out of 5 trials) Red Blue Green Yellow

Direct Vision

It has been proven, as I mentioned in my introduction previously, that our peripheral vision is the most efficient way to classify colors in near darkness. The retina encompasses two forms of photoreceptor cells, the rod as well as the cone. The cones are parts that are further delicate when it comes to color, and the rods work best when it comes to motion detection, and are capable to function well in low light environments, and in this case for this experiment, near darkness. The rods are almost totally responsible for our night vision. As the rods are focused throughout our retina, to use them successfully, not viewing right at what you want to see is the best way. By your peripheral vision, identifying something will result to the use of more rods, which will result in a better view of the