Don't forget to protect those pretty little peepers year round, not only when you think it is sunny out. UV rays can be straining and harmful to your little one's eyes and your own as well.
It is always a good idea to wear sunglasses when venturing out. Pick up a pair or two for you and your little ones. Keep a pair in the car or your bag so it is always available, especially on days when the brightness can be quite a glare.