2020–2021 BCSC Basic and Clinical Science Course™
6 Pediatric Ophthalmology and Strabismus
Part I: Strabismus
Chapter 9: Exodeviations
An exodeviation is a manifest (exotropia) or latent (exophoria) divergent strabismus. Risk factors for exotropia include maternal substance abuse and smoking during pregnancy, premature birth, perinatal morbidity, genetic anomalies, family history of strabismus, and uncorrected refractive errors.
The term pseudoexotropia refers to an appearance of exodeviation when in fact the eyes are properly aligned. Pseudoexotropia is much less common than pseudoesotropia (see Chapter 8 for discussion of pseudoesotropia) and may occur when there is a wide interpupillary distance or a positive angle kappa with or without other ocular abnormalities (see the discussions of angle kappa in Chapter 7 of this volume and in BCSC Section 3, Clinical Optics).
Excerpted from BCSC 2020-2021 series: Section 10 - Glaucoma. For more information and to purchase the entire series, please visit https://www.aao.org/bcsc.