Ocular components before and after acquired, nonaccommodative esotropia

Background: Acquired nonaccommodative esotropia describes the sudden onset of a constant, comitant strabismus of idiopathic origin in children >6 mont hs of age. Case Report: We present a case of acquired nonaccommodative esot ropia at 20 months of age in a subject participating in the Berkeley Infant Biometry Study, a longitudinal study of emmetropization and ocular compone nt development in infants between 3 months and 3 years of age. Ocular compo nents for this child were normal before the onset of strabismus (within 2 S D's of the mean for orthotropic study participants) for refractive error, c orneal power, lens radii, lens power, and ocular axial dimensions. Refracti ve error postsurgically was significantly more hyperopic and crystalline le ns power lower than average at +2.38 D and 37.2 D, respectively. Conclusion s: The lack of abnormal ocular parameters is consistent with the idiopathic etiology of acute onset esotropia. This case suggests that ocular componen t values may not be useful for assessing the risk of acquired nonaccommodat ive esotropia. (Optom Vis Sci 2000;77:633-636).