Strabismus, a misalignment of the eyes also referred to as 'squint,' is one of the most common ocular disorders in humans, affecting 1 to 4% of the population. It is frequently associated with amblyopia (uniocular visual neglect) (Parikh ... Strabismus, a misalignment of the eyes also referred to as 'squint,' is one of the most common ocular disorders in humans, affecting 1 to 4% of the population. It is frequently associated with amblyopia (uniocular visual neglect) (Parikh et al., 2003). Strabismus is also a feature of several syndromic syndromes, including congenital fibrosis of extraocular muscles (see, e.g., FEOM1; 135700), Duane retraction syndrome (126800), and chronic progressive external ophthalmoplegia (530000).
Michaelides and Moore (2004) noted that incomitant strabismus is characterized by a degree of ocular misalignment which differs depending upon the direction of gaze or according to which eye is fixing an object, and is associated with defective ... Michaelides and Moore (2004) noted that incomitant strabismus is characterized by a degree of ocular misalignment which differs depending upon the direction of gaze or according to which eye is fixing an object, and is associated with defective ocular movement. Concomitant strabismus is characterized by an angle of deviation (magnitude of ocular misalignment) that remains the same in all directions of gaze, whichever eye is fixing. Concomitant strabismus is one of the most common problems in pediatric ophthalmology, affecting 3 to 5% of the childhood population. Overall, esotropia is more common than exotropia.
Studies by Holm (1939) and Gover and Yaukey (1944) documented a lower incidence of all types of strabismus among Africans and African Americans, 0.5% and 0.6%, respectively, compared to Americans of European ancestry (2.5%). In addition, the majority ... Studies by Holm (1939) and Gover and Yaukey (1944) documented a lower incidence of all types of strabismus among Africans and African Americans, 0.5% and 0.6%, respectively, compared to Americans of European ancestry (2.5%). In addition, the majority of African, African American, and Asian strabismics are exotropes, whereas the majority of Caucasian strabismics are esotropes.