Measuring binocular fusion in normal children:A comparison between the prism bar method and synoptophore method

• DOI: 10.3760/cma.j.issn.1674-845x.2015.01.013
• Publication Date: 2015-01-25
• Authors: Tao Fu; Ping Xi; Jinghui Wang; Qing Su; Yu Li
• Keywords: Prism; Bar (unit)

Objective To evaluate differences between the prism bar and synoptophore methods in measurement of fusional convergence divergence normal children.

Methods This was a prospective research study. Children aged 8 to 15 years who had no ocular disease were recruited tested with their prescribed refractions. The break recovery points measured by respectively. Each test repeated 3 times. An independent samples t-test used compare difference 2 methods. Correlation two analyzed Spearman rank correlation.

Results There vergences dominant eye non-dominant eye. There positive correlations point values (convergence r=0.60,P<0.01; r=0.46, P<0.05). When respectively, significant could be found for either or that methods.

Conclusion When measuring distance vergences, similar effect.

Key words: Fusional convergence; Fusional divergence; Synoptophore; Prism