Lazy eye usually develops from around the age of four.
Why does it happen? - Lazy eye results from other conditions that affect the sight:
- Squint (strabismus): Problems with the eye muscles lead to a misalignment of the eyes.
- Severe long or short-sightedness: An inability for one eye to focus properly can force the stronger eye to work harder, and the other to become ‘lazy’.
- Congenital cataracts: Usually present at birth, congenital cataracts in one eye may make a child’s vision in that eye appear cloudy, forcing the other to work harder.
How to spot it - There are no specific symptoms of lazy eye, but children tend to see less clearly with the affected eye. Parents might notice a child holding his or her head at an angle to see distant objects. Children may repeatedly cover one eye, or develop a habit of squinting.