Firstly, we would need to assess your child's eyes and determine the cause of the lazy eyes. Generally, there are 3 broad main causes of lazy eyes.
- Focusing errors or anisometropia. This is when one eye has different and larger prescription compared to the fellow eye. Generally this would be initially treated with optical correction either with spectacles or contact lenses.
- Fixation errors or strabismus. This is when one eye is turned in or out, causing both eyes to look in different directions. This causes different images to be projected to the brain and to prevent double vision the brain adapts by turning off one eye which becomes lazy. On the initial stages, optical correction may help to realign the eyes to point in the same direction. Sometimes this may not be enough and surgery may be required.
- Opacities. This is much rarer where the vision in one eye is affected by opacities such as cataracts.
Yes, we would need to assess your child's binocular vision. This would involve a thorough testing of both your childs' eyes ability to focus together. A diagnosis that may be discovered from a binocular vision assessment is condition called convergence insufficiency. This is when both eyes are not moving the same way effectively, especially at close objects. Convergence insufficiency can be effectively treated with vision therapy.