Protocol: Randomized Trial of Bifocal Spectacles vs. Single Vision Spectacles for Esotropia Greater at Near Status: Closed Start Date: 11/01/2022 End Date: Clinical Trial ID: NCT05527015 Public Dataset: Primary Objective:• To compare the proportion of BFL and SVL participants with treatment failure by 36 months• To compare binocular function test scores between the BFL and SVL groups with both groups in BFL at 38 months after randomization (or 2 months after treatment failure)• To evaluate treatment failure by 36 months according to baseline factor subgroups of: duration of constant esotropia pre-enrollment, presence of near stereoacuity on the Randot Preschool Stereoacuity test, in-office response of near alignment with +3.00 D lenses, and gradient AC/A ratio Back