It's a lot more common than you would think!
I find it helps to find out which angles minimize the look of your eye (typically looking too far to the side makes it worse). If you can help engage your eyes to move together momentarily before the photo is taken, that can help too.
If you're looking for a set of good photos, just make sure your photographer double checks their images as they shoot and to let you know if your eyes aren't matching up exactly in the images.
Hope that helps!