(HealthDay News) -- Lazy eye (amblyopia) means one eye is weaker than the other. Unless one of the eyes is aligned abnormally or there is some other visual evidence, parents may not be aware that their child is affected.

The American Academy of Ophthalmology says symptoms of lazy eye may include:

• Generally poor vision, or vision that is particularly poor in one eye.
• Making adjustments to see, such as by tilting the head, squinting or closing one eye.
• Having poor depth perception.
• Having an eye that wanders inward or outward.
• Having headaches.