Under normal conditions, when the eyes are aligned, they move together as a pair allowing for clear, single and comfortable vision. Individuals suffering from any eye misalignment, whether an eye is turned in, out, up or down may compensate by tilting or turning their head. This compensatory behaviour allows the brain to eliminate double vision that a person may experience. However, this can result in problems including chronic neck pain or headaches. Treatment for a head tilt or head turn includes glasses, prism, vision therapy, or surgery.