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  • Title: To evaluate stereoacuity in patients with acquired esotropia and to determine factors associated with favourable outcomes.
    Author: Nongpiur ME, Singh A, Saxena R, Sharma A, Sharma P.
    Journal: Indian J Ophthalmol; 2014 Jun; 62(6):695-8. PubMed ID: 25005198.
    Abstract:
    AIM: To evaluate stereoacuity in patients with acquired esotropia and determine the factors associated with favorable outcomes. MATERIALS AND METHODS: A total of 68 subjects aged 6 years and above were included in the study. Thorough clinical evaluation including binocular status examination using the Bagolini-striated glass test, The Netherland Organization (TNO), and Randot stereo test were done. The subjects were divided into two groups 1 and 2, based on the amount of deviation. Statistical analysis of the result was performed. RESULT: The duration of misalignment in the group with deviation less than or equal to 8 prism diopters (PD) was 1.49 ± 0.86 years, whereas in the group with deviation more than or equal to 10 PD was 4.64 ± 2.99 years (P = 0.000). Among the subjects in group 1, 89.5% achieved fusion and 52.6% had stereoacuity on both TNO and Randot, whereas in group 2 40% achieved fusion and 3.3% stereopsis on both TNO and Randot (one case with only coarse stereopsis). A subanalysis within group 1 revealed a statistically significant difference for the duration of misalignment (P = 0.02), but a marginal difference for the amount of deviation (P = 0.3). CONCLUSION: A horizontal deviation up to 8 PD was compatible with stereopsis. Also, the duration of constant misalignment affects the attainment of stereopsis despite successful realignment.
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