non-paralytic squint
Last reviewed 03/2023
The features of a non-paralytic, or concomitant, squint include:
- usually congenital
- diplopia is absent
- extraocular muscles and nerves are grossly normal
- the angle between the longitudinal axes of the eyes remains constant on testing eye movements
- both eyes have full movement if tested separately
There is excess tone in one muscle compared with its antagonist resulting in deviation of the eye.