Evaluation of convergence, accommodation and fusional vergence in pre-presbyopes with asthenopia

S. Alrasheed, Saeed Aljohani
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引用次数: 0

Abstract

Background: Pre-presbyopes may suffer from ocular symptoms such as asthenopia of near work.Aim: This study aimed to evaluate near points of convergence, amplitudes of accommodation, and fusional vergence among pre-presbyopes with asthenopia symptoms.Setting: The study was conducted at El-Walidain Eye Hospital, Khartoum, Sudan in 2022.Methods: The study was a hospital-based prospective, including 107 pre-presbyopes aged 35–40 years who complained of asthenopia symptoms. Clinical examinations included an assessment of amplitude of accommodation, near point of convergence and fusional vergence.Results: The findings showed receded in near points of convergence and a decrease in the accommodation was highly significantly associated with increased age among emerging presbyopes with asthenopia symptoms (p = 0.0001). Conversely, positive and negative fusional vergence amplitudes were not significantly correlated with age with p = 0.109 and p = 0.355, respectively. Positive and negative fusional amplitudes were not significantly different between males and females (p ˃ 0.05). Esophoria was more common in pre-presbyopia 62 (57.4%) and exophoria 45 (43.6) with p = 0.503.Conclusion: The pre-presbyopes presented with low accommodation amplitude and receded near point of convergence, but without significant changes in positive and negative fusional vergence amplitudes.Contribution: This study added by demonstrating how early presbyopia altered accommodation amplitude and near point of convergence significantly while having no significant impact on amplitudes of positive and negative fusional vergence.
对患有散光的先期老花眼患者的辐辏、调节和融合性辐辏进行评估
背景:目的:本研究旨在评估有散光症状的老花眼前期患者的近距离辐辏点、调节幅度和融合辐辏:研究于 2022 年在苏丹喀土穆的 El-Walidain 眼科医院进行:该研究是一项以医院为基础的前瞻性研究,包括 107 名年龄在 35-40 岁之间、主诉有散光症状的老花眼前期患者。临床检查包括评估调节幅度、近点辐辏和融合辐辏:结果:研究结果表明,在出现散光症状的新老花眼患者中,近点辐辏后退和调节力下降与年龄增长有很大关系(p = 0.0001)。相反,正向和负向融合辐辏振幅与年龄的相关性不明显,分别为 p = 0.109 和 p = 0.355。男性和女性的正性和负性融合振幅没有明显差异(p ˃0.05)。结论:老花眼前期更常见的是内视 62 人(57.4%)和外视 45 人(43.6%),p = 0.503:结论:老花眼前期患者的调节幅度较低,在辐辏点附近后退,但正向和负向融合辐辏幅度没有显著变化:本研究通过证明早期老花眼如何显著改变调节振幅和近辐辏点,而对正性和负性融合辐辏振幅无显著影响,为本研究增添了新的内容。
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来源期刊
African Vision and Eye Health
African Vision and Eye Health Health Professions-Optometry
CiteScore
1.00
自引率
0.00%
发文量
46
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