On the morning of August 21, the sky will darken over the United States during a total solar eclipse. You are going to want to watch, but staring at an eclipse directly is as bad as staring directly into the sun. On today's Health Minute, ophthalmologist Dr. Jeff Pettey warns of the serious long-term vision damage the eclipse can cause as well as some ways you can watch the cosmic event safely.

To check if your eclipse glasses is certified, go here.

Learn more about this topic in the full-length interview.