That familiar eyesight chart revolutionized vision testing, and we went to ridiculous lengths to test it out
In your lifetime, you must have squinted in The eye chart at DMV or the physician’s office, attempting to make out the bottom line. The test seems straightforward enough, right? Read a random string of vowels and consonants then repeat the process with the line below until you can not make out the letters anymore.
Turns out, there The size and arrangement of those block letters so as to check your capacity to see details — called your”visual acuity.” First developed in 1862 by Dutch ophthalmologist Herman Snellen, the prototypes of the eye chart started with abstract shapes. At some point, the chart included those block letters.
Among Snellen’s enormous accomplishments was standardizing So that others could use the very same principles to develop the eye graph Their own tests. So we decided to give it a go. In the movie above Follow back the eye chart to its origins and have a look at the Biology of the mathematics that goes into testing its limitations and visual acuity. Afterward, we go to lengths to check my own vision. Spoiler Alert: it’s wonderful.
