Over time, type 1 diabetes can cause other problems in your body. It can affect your heart, eyes, nerves, and kidneys. You should see an eye doctor to make sure your eyes are healthy. You may need to get checked sooner than 5 years after your diagnosis, depending on your age, vision problems, or if you wear glasses or contacts. If your child has type 1, screening checkups usually aren't needed until he or she goes through puberty.