Mock eye exam t-shirt
this is a funny Mock Snellen chart or more commonly thought of as an eye exam chart. Which is sure to get people to try to read all of your shirt. What makes this shirt better than most others is that you can change the shirts color to anything you want without hassle as its all done in freehand text instead of an image with a white background. The common Snellen chart is printed with eleven lines of block letters. The first line consists of one very large letter, which may be one of several letters, for example E, H, or N. Subsequent rows have increasing numbers of letters that decrease in size. A person taking the test covers one eye 20 feet away, and reads aloud the letters of each row, beginning at the top. The smallest row that can be read accurately indicates the visual acuity in that specific eye. Only the ten Sloan letters C, D, E, F, L, N, O, P, T, Z are used in the common Snellen chart. The perception of five out of six letters (or similar ratio) is judged to be the Snellen fraction
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