![]() ![]() Applicants for licensure will not be approved to take the examination prior to receipt of the M.S.W. degree as a condition for admission to the examination. ![]() Then, we go to ridiculous lengths to test my own eyesight. Note: New York State candidates for the Social Work licensure examination must have received the M.S.W. In the video above, we trace the eye chart back to its origins and take a close look at the biology of visual acuity and the math that goes into testing its limits. One of Snellen’s big accomplishments was standardizing the eye chart so that others could use the same principles to develop their own tests. ![]() Eventually, the chart included those familiar block letters. Turns out, there’s some very precise math that determines the size and arrangement of those block letters in order to test your ability to see details - known as your “visual acuity.” First developed in 1862 by Dutch ophthalmologist Herman Snellen, the prototypes of this eye chart began with abstract shapes. The test seems simple enough, right? Read a random string of consonants and vowels on one line, then repeat the process with the line below until you can’t make out the letters anymore. ![]() At least once in your life, you must have squinted at the eye chart at the doctor’s office or DMV, trying to make out the blurry bottom line. ![]()
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