Q: I tried watching the lunar eclipse recently but I had a hard time with it. I had to close one eye or the other because it appeared doubled. Why would that happen?

A: It sounds like you probably have a slight misalignment of your eyes. Sometimes this only shows up in certain circumstances. Looking at the moon is a unique situation because it is so far away, and the surroundings are dark. Get your eyes checked to see if it’s a problem with your eyes, or your general health.