Bierly J R, Furgason T G, Litteral G, VanMeter W S
Department of Ophthalmology, University of Kentucky, Lexington 40536, USA.
CLAO J. 1995 Apr;21(2):96-8.
We fit the SimulVue bifocal contact lens, a soft lens with a simultaneous vision design, in 30 presbyopic patients. The lens has a central near correction surrounded by a concentric peripheral distance correction. Patients were evaluated prior to inclusion in the study and followed for a period of 1 year. The evaluation included visual acuity and contrast sensitivity at both distance and near with and without lenses. In addition, patients completed a questionnaire at the end of the study. At the end of 1 year, 16 of 30 (53%) patients were successfully wearing the contact lenses. Of these, 13 of 16 patients (81%) achieved J2 or better near vision, and 10 of 16 (63%) achieved 20/25 or better distance vision in both eyes. Greater reduction of contrast sensitivity occurred at near, with only 38% of patients (6/16) retaining their normal contrast sensitivity; whereas at distance, 81% of patients (13/16) retained normal contrast sensitivity. Fourteen patients failed to complete the study. The most common reasons cited were poor vision at distance (6/14, 43%), poor vision at near (6/14, 43%), and ghosting of images (4/14, 29%). We believe that the SimulVue contact lens is a viable option for the correction of many presbyopic patients.
我们为30名老花眼患者验配了SimulVue双焦点隐形眼镜，这是一款采用同步视觉设计的软性隐形眼镜。该镜片中央为近用矫正区，周围环绕着同心的周边远用矫正区。在纳入研究前对患者进行了评估，并随访了1年。评估内容包括戴镜和不戴镜时的远、近视力及对比敏感度。此外，患者在研究结束时完成了一份问卷。1年后，30名患者中有16名（53%）成功佩戴了隐形眼镜。其中，16名患者中有13名（81%）近视力达到J2或更好，16名患者中有10名（63%）双眼远视力达到20/25或更好。近视力时对比敏感度下降更明显，只有38%的患者（6/16）保持正常对比敏感度；而远视力时，81%的患者（13/16）保持正常对比敏感度。14名患者未完成研究。最常见的原因是远视力差（6/14，43%）、近视力差（6/14，43%）和图像重影（4/14，29%）。我们认为SimulVue隐形眼镜是矫正许多老花眼患者的一个可行选择。
