Department of Optometry, Eulji University, Seoul, Republic of Korea .
Eye Contact Lens. 2024 Nov 1;50(11):475-481. doi: 10.1097/ICL.0000000000001120. Epub 2024 Sep 5.
The aim of this study was to evaluate the impact of wearing center-near (CN) and center-distance (CD) multifocal contact lenses (MFCLs) on spherical aberrations and visual acuity in patients with early presbyopia.
Fifty participants with early presbyopia wore CN-MFCLs and CD-MFCLs for 1 week. The average corrected refractive power was -2.65±1.67 D. Spherical aberration was measured using an auto-refractor after 1 week of lens use.
No significant difference in overall visual acuity was observed when using either lens. Participants favored CD-MFCLs for distance vision and CN-MFCLs for near vision. This study highlighted variations in aberration and satisfaction based on age, refractive errors, and individual responses. Patients with positive spherical aberrations tended to benefit from CN-MFCLs, which improved both distance and near vision, although additional correction was required for clear distance vision. Patients with early presbyopia generally preferred CN-MFCLs when positive aberration was prevalent, whereas those with negative aberration reported greater satisfaction with distance vision when wearing CD-MFCLs.
This study confirmed that wearing MFCLs leads to changes in spherical aberration and visual acuity in patients with early presbyopia, particularly when positive aberration prevails. Future research should investigate these effects across different stages of presbyopia.
本研究旨在评估中距（CN）和中度数（CD）多焦点隐形眼镜（MFCL）对早期老视患者的球差和视力的影响。
50 名早期老视患者佩戴 CN-MFCL 和 CD-MFCL 一周。平均矫正屈光力为-2.65±1.67 D。使用自动折射仪在一周后测量球差。
使用两种镜片时，整体视力均无显著差异。参与者更喜欢 CD-MFCL 用于远距视力，CN-MFCL 用于近距视力。本研究强调了基于年龄、屈光不正和个体反应的差异。正球差患者倾向于从 CN-MFCL 中受益，它可以改善远距和近距视力，尽管需要额外的矫正才能获得清晰的远距视力。当正球差普遍存在时，早期老视患者通常更喜欢 CN-MFCL，而负球差患者则报告说佩戴 CD-MFCL 时远距视力满意度更高。
本研究证实，佩戴 MFCL 会导致早期老视患者的球差和视力发生变化，尤其是在正球差普遍存在时。未来的研究应该在不同的老视阶段研究这些影响。
