The people who have coloboma of the iris may suffer from other vision problems as well. So the first thing you may need to do is to see an ophthalmologist immediately. He or she will help to diagnose and manage other problems that occur with coloboma. These problems may include cataracts or growth of new blood vessels in the back of the eyes. And he or she can also recommend particular treatments. Besides, you may need to have an eye exam regularly to see whether the amblyopia develops or not. Good luck!