A squint (strabismus) refers to the misalignment of the eyes, typically causing one eye to turn inward or outward. Less commonly, an eye may turn upward or downward.

The most common types of squint are:

• Divergent squint (exotropia): one eye turns outwards, away from the nose.
• Convergent squint (esotropia): one eye turns inwards, towards the nose.
• Hypertropia: one eye higher than the other
• Hypotropia: one eye lower than the other.

Squint can be constant or intermittent.

Intermittent divergent squint is the most common types among Hong Kong population.