Comparison of Measured Fusional Vergence Amplitudes using Prism Bar and Synoptophore in Sudanese Patients with Near Exophoria

Background: Assessment of the fusional vergence amplitudes constitutes one most important diagnostic tools to obtain information about ability maintain binocular vision. Several techniques can be used assess this function. However, those methods are not interchangeable, and measurement repeatability has been questioned. Objective: This study aimed compare range measurements using prism bars synoptophore in Sudanese patients with near exophoria Methods: The was a comparative cross-sectional hospital-based, performed vision clinic at Al-Neelain Eye Hospital. Fusional (positive negative) were measured on 122 (67 females 55 males), mean age standard deviation 16.79 ± 5.22 years old bar methods. Results: findings showed that higher positive obtained method (24.7 7.2 Δ base-out), whereas provided lower finding (22.6± 7.6 base-out). Conversely, revealed for negative (13.9± 3.9 base-in) than (12.7± 3.7 base-in). Using t-test, significant differences found between all two techniques, P<0.05. Measurements by no relationship vergence, P>0.05. Conclusion: Given difference results measuring amplitudes, caution should taken when making decisions regarding assessment latent manifest strabismus.