The American Optometric Association suggests that children should have their first regular eye exam at six months of age. Another vision exam should take place when a child is around two or three years of age when their vision undergoes its most rapid development and vision correction is most effective.
The ISNUMBER function is a quick, easy way to check if a cell contains a number. Our example used the IF function to illustrate how ISNUMBER can be used. If you haven't used IF in a formula before, you can read our lesson on the IF function here.
#1. I need to create a formula to check if a cell contains some text. For example, I need to check if cell A1 contains the text carolyn and display Yes if it does and No if it doesn't. I've tried searching online but can't figure out how to do this.