Those letters on an eye chart. Where did they come from? Were they random choices made by an august body of sadistic calligraphers? Or, possibly, were they scientifically chosen to embarrass us at the DMV? In Episode 46, Out Of My Mind podcast host Jay Douglas tells the story of the invention of the modern-day eye chart and how its inventor, Herman Snellen, blinded us with science.
Want More?
Check out the blog story at The Out Of My Mind Blog. And be sure to read the Mind Doodle at the end of the post for a little-known story about the highest human visual acuity ever recorded.
Get Every Podcast
Subscribe to The Out Of My Mind Blog and Podcast and get an email with each new post and episode—plus a free book of humor.
Subscribe to the podcast to have every episode delivered to your phone or tablet