1. Optical Illusions Test Made by: Daniel Hunter, Erika Workman, Matthew Lim, & Zach Schwertz

2. Who is our Target Group and Why? Our target group is the armed forces, specifically the air force and sniper units Why? We believe that with our advanced testing, we could improve the air forces strength by improving the pilots vision. The use of geometric processes and different colors enhances the pilots ability to discern different colors in active duty. 3. Background Knowledge What is Visual Acuity? Sharpness of vision, measured by the ability to discern letters or numbers at a given distance according to a fixed standard. 4. Background Knowledge Cont. What does visual acuity tell about the person? If your results are perfect after completing a visual acuity test, then you have perfect vision. However, abnormal results indicate that a person has less than perfect vision, and they might need glasses. 5. Background Knowledge Cont. What are the different methods used to test visual acuity? 1. Letter Test: Stand back 20 feet from a chart with different sized letters. Then have someone point to the letters and ask you to read them. 2. Peripheral Vision Test: Look at a blank screen and images quickly flashed on and off to the sides of the screen and inform the optometrist if you are aware of the flashing images. 6. Background Knowledge Cont. What are some of the ways professional organizations use visual acuity testing? NASA- testing for Astronauts: In order to become an astronaut, you must have 20/20 corrected vision in each eye. Astronauts also receive these two tests before and after all missions, along with optical coherence tomography (which magnifies cross-section views of parts of the eye), magnetic resonance imaging, and fundus photography (which records images of the retina and back of the eye). Military/Air Force-testing for pilots: No worse than 20/50 (pilot) and 20/200 (navigator). Pilots for the military and Air Force have to have a visual inspection. Optometrist testing for everyone: A normal visual acuity test is used to test for 20/20 vision. This distance represents how well you can see at certain distances. However, these tests do not test the depth perception, eye coordination, focusing ability and color vision. Optical Illusion Visual Acuity testing tests these things. 7. You are now about to see a series of pictures with unusual designs. Tell us: What you see The quantity of objects you see What colors we used Any geometric figures or actions (reflections, tessellations, etc.) that you see. 8. What do you see? 9. The Sun/Moon Face The picture is a technology drawn sketch of a sun and moon that are smiling at each other. The drawing happens to also make a smiley face. The face is symmetrical not including the colors. The design shows the inversion of colors and the hidden image of the yellow crescent moon. 10. What do you see? 11. Four Pacmen or a Square? The picture in the previous slide was also a sketch through technology of four Pacmen that have been rotated 90 degrees clockwise to make a white square. Depending on how your eyes see it, you may see four Pacmen, a square, or both (or even four flower petals). 12. How many birds? 13. Description of Previous Illusion There are 7 birds in the picture including the large bird on the left side. The birds and the branches form a two-dimensional plane (tessellation). The birds are rotated to fit in between the branches to blend in and increase the level of difficulty in spotting the birds. The black and white increase the difficulty of spotting the birds. In visual acuity testing, this can test your nearsightedness. 14. Description of Previous Illusion Symmetry is present in this design so that it would be harder to distinguish if this were a man or a bunny. From a far distance, this looks like a man squinting, who also has a mustache. However, if you look closely you can see the bunnys face in the mans hair, the squinting eyes of the man are actually the paws of the bunny, the nose and mustache are a carrot that the bunny is eating, one of the ears is the bunnys tail, and the shoulders of the man are really the bunnys feet. The colors black and white also increase the level of difficulty in finding the man and the rabbit. In visual acuity testing, this image can test your vision from varying distances. 15. Description of Previous Illusion Symmetry, translations, and complementary colors are used in this design. When you look at the right side of the page, you can clearly see that the colors of the design have been flipped. In a visual acuity test, this can test how your retina functions, since that is the part of the eye that sees color. 16. Is the blue face facing towards you or away from you? 17. Confusing Perspective Cube The cube made on the computer by Zach Schwertz has 5 yellow face and one blue face. However, depending on how you look at the cube, you may see the blue face being in the back left. Although, if you blink your eyes and focus your eyes on the vertex where the dotted lines meet, you will see a cube with the blue face being in the upper left. 18. Why our testing is the best? Our testing is the best for a myriad of reasons. Our testing uses advanced geometric transformations and processes that enhance the difficulty and validity of the testing. Our powerful use of dull colors (such as black and white) to emphasize the difficulty of spotting the desired objects also impacts the difficulty level positively in our testing. The use of inverted colors also challenges the retinal section of the eye to decode the different shades and separate them according to the assigned task. The illusions previously shown represent these factors immensely.