Avetisov S E, Rybakova E G, Egorova G B, Churkina M N, Borodina N V, Boev V I
Vestn Oftalmol. 2003 Jul-Aug;119(4):28-31.
A study aimed at assessing the efficiency of presbyopia correction by bifocal contact lenses (BCL) was undertaken; it envisaged a comprehensive evaluation of subjective data provided by patients and measurements of a number of functional parameters of the visual quality for far and near, including mono- and binocular measurements with BCL of different constructions versus a maximal sphero-cylindrical spectacle correction for far and for near. Soft Acuvue Bifocal BCL as well as soft and rigid BCL manufactured in the optical-and-mechanical laboratory of the Research Institute for Eye Disease of the Russian Academy of Medical Sciences and Russian-made and imported bifocal soft and rigid lenses, respectively, were made use of in the study. A reduced contrast sensitivity (mainly in high frequencies) to 7% with Russian-made BCL, to 12.5% with Acuvue Bifocal BCL, to 8.7% with monofocal BCL and to 13.4% with the "mono-vision" system was registered. A decreased visual working ability to 13% with soft bifocal Russian-made BCL, to 17.3% with Acuvue Bifocal BCL and to 20.7% with the "mono-vision" system was detected versus the spectacle correction. A reduction by 25% was noted in the stereoscopic vision indices with the "mono-vision" system. A study of sensitivity to dazzling did not show any statistically reliable differences between various correction types.
开展了一项旨在评估双焦点隐形眼镜（BCL）矫正老花眼效率的研究；该研究设想对患者提供的主观数据进行全面评估，并测量远视力和近视力视觉质量的一些功能参数，包括使用不同构造的BCL进行单眼和双眼测量，并与远用和近用的最大球柱面眼镜矫正进行对比。该研究使用了Soft Acuvue双焦点BCL，以及俄罗斯医学科学院眼病研究所光学机械实验室制造的软质和硬质BCL，分别为俄罗斯制造和进口的双焦点软质和硬质镜片。结果显示，俄罗斯制造的BCL的对比敏感度（主要是高频）降低至7%，Acuvue双焦点BCL降低至12.5%，单焦点BCL降低至8.7%，“单眼视力”系统降低至13.4%。与眼镜矫正相比，俄罗斯制造的软质双焦点BCL使视觉工作能力降低至13%，Acuvue双焦点BCL降低至17.3%，“单眼视力”系统降低至20.7%。“单眼视力”系统的立体视觉指标降低了25%。对眩光敏感度的研究未显示不同矫正类型之间存在任何统计学上可靠的差异。
