- Misalignment of the visual axes.
- Concomitant (common)
- Paralytic (rare)
- Due to imbalance in the extraocular muscles
- convergent is more common than divergent
- Due to paralysis of extraocular muscles
Detection of squint may be made by the corneal light reflection test – holding a light source 30cms from the child’s face to see if the light reflects symmetrically on the pupils.
The cover test is used to identify the nature of the squint
- Ask the child to focus on an object
- cover one eye
- observe movement of the uncovered eye
- cover other eye and repeat test
- Eye patches may help prevent amblyopia (also known as lazy eye, is a vision development disorder in which an eye fails to achieve normal visual acuity, even with prescription eyeglasses or contact lenses)
- Referral to secondary care is appropriate