THE BRONX - A Bronx doctor says all students should get a thorough eye exam before heading back to school.

According to Dr. Mark Former, poor vision problems are often misdiagnosed as a behavioral issue. Doctors say a child with undetected vision problems can be frustrated or bored in school because he or she can't see the board or read a book easily.

Eye doctors say warning signs for vision problems are squinting often, tilting their head or appearing disinterested at the back of the class.