García-Lázaro Santiago, Albarrán-Diego César, Ferrer-Blasco Teresa, Radhakrishnan Hema, Montés-Micó Robert
Optometry Research Group, Optics Department, University of Valencia, Valencia, Spain.
Clin Exp Optom. 2013 Jan;96(1):46-52. doi: 10.1111/j.1444-0938.2012.00791.x. Epub 2012 Sep 7.
The aim was to evaluate the visual performance provided with a contact lens-based pinhole design against a simultaneous vision multifocal contact lens.
In a cross-over study at the University of Valencia, 22 presbyopic patients were evaluated using an artificial pupil fitted on the non-dominant eye and the simultaneous vision PureVision Multifocal contact lenses. After one month of contact lens wear, binocular distance visual acuity (BDVA), binocular near visual acuity (BNVA), defocus curve, binocular distance contrast sensitivity, binocular near contrast sensitivity, and stereoacuity were measured, under photopic conditions (85 cd/m(2)). In addition, binocular distance visual acuity and binocular distance contrast sensitivity were examined under mesopic conditions (5 cd/m(2)).
Mean binocular distance visual acuity for pinhole and PureVision Multifocal were 0.02 ± 0.04 and 0.01 ± 0.04 logMAR under photopic conditions and 0.16 ± 0.06 and 0.12 ± 0.04 logMAR for binocular near visual acuity under mesopic conditions, respectively. No statistically significant differences were found between both types of lenses at distance for both lighting levels and intermediate distances (p > 0.05). There was a significant difference at near vision under photopic conditions (p = 0.03). Binocular distance contrast sensitivity revealed statistically significant differences between the pinhole system and PureVision Multifocal for six and 12 cpd (cycles per degree) spatial frequencies at the two luminance levels, while for near vision, differences were also significant for 18 cpd. Stereoacuity was better with PureVision Multifocal (127 ± 49.3 seconds of arc) compared with the pinhole lens (220.2 ± 32.3 seconds of arc, p = 0.004).
Pinhole and PureVision Multifocal contact lenses provide good binocular vision for distance and functional intermediate vision. Although it was better with the PureVision Multifocal, near vision was not satisfactory for either of the two contact lens options.
目的是评估基于隐形眼镜的针孔设计与同步视多焦点隐形眼镜所提供的视觉性能。
在瓦伦西亚大学进行的一项交叉研究中，22名老花眼患者使用安装在非优势眼上的人工瞳孔和同步视PureVision多焦点隐形眼镜进行评估。佩戴隐形眼镜一个月后，在明视条件下（85 cd/m²）测量双眼远视力（BDVA）、双眼近视力（BNVA）、散焦曲线、双眼远对比度敏感度、双眼近对比度敏感度和立体视锐度。此外，在微光条件下（5 cd/m²）检查双眼远视力和双眼远对比度敏感度。
针孔隐形眼镜和PureVision多焦点隐形眼镜在明视条件下的平均双眼远视力分别为0.02±0.04和0.01±0.04 logMAR，在微光条件下双眼近视力分别为0.16±0.06和0.12±0.04 logMAR。在两种光照水平和中间距离下，两种类型的镜片在远视力方面均未发现统计学上的显著差异（p>0.05）。在明视条件下近视力存在显著差异（p = 0.03）。双眼远对比度敏感度显示，在两个亮度水平下，针孔系统与PureVision多焦点隐形眼镜在6和12 cpd（每度周数）空间频率上存在统计学显著差异，而在近视力方面，18 cpd时差异也显著。与针孔镜片（220.2±32.3弧秒，p = 0.004）相比，PureVision多焦点隐形眼镜的立体视锐度更好（127±49.3弧秒）。
针孔隐形眼镜和PureVision多焦点隐形眼镜为远视力和功能性中间视力提供了良好的双眼视觉。虽然PureVision多焦点隐形眼镜表现更好，但两种隐形眼镜选项的近视力都不尽人意。
