The Ohio State University College of Optometry, Columbus, Ohio.
Optom Vis Sci. 2021 May 1;98(5):483-489. doi: 10.1097/OPX.0000000000001695.
This pilot study compared subjective and objective vision of children wearing single-vision and +2.00, +3.00, and +4.00 D add power soft multifocal contact lenses to determine whether the higher add power-thought to provide better myopia control-resulted in visual compromise.
This study aimed to determine the maximum add power children wearing center-distance soft multifocal contact lenses could accept objectively and subjectively.
Myopic children were assigned in random order to wear omafilcon A single-vision or multifocal "D" contact lenses with +2.00, +3.00, or +4.00 D add power for 1 week each. High-contrast distance and near visual acuity, low-contrast distance visual acuity, and contrast sensitivity were measured at each visit along with a quality of vision questionnaire to assess their vision. The Friedman test was performed to evaluate the impact of add power on all outcome measures.
Eleven subjects were enrolled, and nine subjects completed the study. The median age of completed subjects was 11 years. Median logMAR low-contrast distance visual acuity was reduced in the +3.00 (+0.20) and +4.00 (+0.28) D add lenses compared with the +2.00 (+0.16) D add and single-vision lenses (+0.10, P < .001). All three multifocal lenses resulted in reduced contrast sensitivity (+1.35 to +1.40) compared with single-vision lenses (+1.60, P < .001). In general, +3.00 and +4.00 D add lenses resulted in worse glare/starbursts, ghost images, computer vision, changing fixation distance, and overall vision, but results varied. There were no differences among the lenses with respect to subjective assessments of distance vision, near vision, strain or tiredness, contact lens comfort, or sporting activities.
The +3.00 D and higher add powers result in more objective and subjective vision-related issues than single-vision lenses, but the +2.00 D add multifocal lenses were well tolerated.
本初步研究比较了单焦点和+2.00、+3.00、+4.00 D 附加正球镜软多焦点接触镜的儿童的主观和客观视力，以确定更高的附加正球镜度数（认为可以更好地控制近视）是否会导致视觉受损。
本研究旨在确定戴中心距离软多焦点接触镜的儿童可客观和主观接受的最大附加正球镜度数。
近视儿童随机分配，分别佩戴欧舒适 A 单焦点或多焦点“D”接触镜，附加+2.00、+3.00 或+4.00 D，每周 1 周。每次就诊时测量高对比度远视力和近视力、低对比度远视力和对比敏感度，并进行视力质量问卷调查，以评估他们的视力。采用 Friedman 检验评估附加正球镜对所有结果指标的影响。
共纳入 11 名受试者，其中 9 名完成研究。完成研究的受试者中位年龄为 11 岁。中位 logMAR 低对比度远视力在+3.00（+0.20）和+4.00（+0.28）D 附加镜片中较+2.00（+0.16）D 附加和单焦点镜片下降（+0.10，P<.001）。与单焦点镜片相比，所有三种多焦点镜片的对比敏感度均降低（+1.35 至+1.40，P<.001）。一般来说，+3.00 和+4.00 D 附加镜片导致更差的眩光/星爆、鬼影、计算机视觉、改变固定距离和整体视觉，但结果存在差异。在距离视力、近视力、疲劳或疲劳、隐形眼镜舒适度或运动活动方面，三种镜片之间没有差异。
与单焦点镜片相比，+3.00 D 及更高的附加正球镜会导致更多的客观和主观视力相关问题，但+2.00 D 附加多焦点镜片的耐受性良好。
