Victoria Erickson, Kimberly Merrill, Collin M McClelland, Christian Larson, Michael S Lee
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引用次数: 0
Abstract
Purpose: The single Maddox rod test (SMRT) is a rapid subjective method for detecting ocular misalignment. In this study, we compared the prism single Maddox rod test (PSMRT) to the prism alternate cover test (PACT) in normal individuals to see if there was any disagreement.
Methods: Ocular alignment was measured at distance and near with the PSMRT and PACT in 52 normal participants. Secondary measurements included visual acuity, near point of convergence, and stereoacuity.
Results: The difference between each participants' measurements at near (ΔX') was 4.44 ± 3.87 Δ (p < .001) meaning each participant was an average of 4.44 Δ more exophoric at near with the PSMRT compared to their measurement at near with the PACT. There was no significant difference between PSMRT and PACT at distance (-0.09 ± 1.33 Δ (p > .5)).
Discussion: Among visually normal participants, the PSMRT measures more exophoria at near than the PACT. This difference may affect the interpretation of near alignment in various clinical settings, especially when evaluating patients with symptoms suggestive of convergence insufficiency. The PSMRT should be used with caution and be confirmed with the PACT when clinically indicated.
目的：单马多克斯棒试验（SMRT）是一种快速主观检测眼位失调的方法。在本研究中，我们比较了正常个体的棱镜单马多克斯棒测验（PSMRT）和棱镜交替盖测验（PACT）是否存在差异。方法：用PSMRT和PACT测量52例正常受试者的近、远距离眼线。二次测量包括视力、近会聚点和立体视敏度。结果：每位受试者在近（ΔX'）测量值的差异为4.44±3.87 Δ （p p >.5）)。讨论：在视力正常的参与者中，PSMRT比PACT测量出更多的近距离外视。这种差异可能会影响在不同的临床环境中对近对齐的解释，特别是在评估有趋近功能不全症状的患者时。PSMRT应谨慎使用，并在临床指征时与PACT确认。
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