Flynn W J, Block M G, Tredici T J, Provines W F
Aviat Space Environ Med. 1987 Jun;58(6):581-7.
The effects of positive acceleration on soft contact lens wear were tested on a human centrifuge to +8 Gz. There were 11 subjects who participated in this study; 5 were myopic subjects fit with low-, medium-, and high-water-content spherical soft lenses; 3 were astigmatic subjects fit with various designs of toric soft lenses and 3 were emmetropic control subjects. As an additional control, the contact lens subjects were tested with spectacles for comparison. Video photography was used to monitor lens position during the centrifuge rides and visual acuity was checked at +1, +2, +4, +6, and +8 Gz with a reduced Snellen eye chart. Each lens type and control run was evaluated in straight-ahead, lateral, and vertical gaze. No visually significant decentration was noted for any of the lens types tested up to the maximum level of +8 Gz. Visual acuity was reduced at the higher +Gz levels for contact lenses, and spectacle trials, and with the emmetropic controls--all to similar levels. Contact lens wear did not produce any corneal insult due to the +Gz exposure.
在人体离心机上测试了正向加速度对软性隐形眼镜佩戴的影响，加速度达到+8 Gz。有11名受试者参与了这项研究；5名近视受试者佩戴了低、中、高含水量的球面软性隐形眼镜；3名散光受试者佩戴了各种设计的复曲面软性隐形眼镜，3名正视对照受试者。作为额外对照，对佩戴隐形眼镜的受试者也佩戴眼镜进行测试以作比较。在离心机运行期间，使用视频摄影监测镜片位置，并使用简化的斯内伦视力表在+1、+2、+4、+6和+8 Gz时检查视力。对每种镜片类型和对照试验在直视、侧视和垂直注视时进行评估。在高达+8 Gz的最大加速度水平下，所测试的任何镜片类型均未发现有明显的视觉性偏位。在较高的+Gz水平下，隐形眼镜、眼镜试验以及正视对照受试者的视力均下降——所有下降程度相似。由于+Gz暴露，佩戴隐形眼镜并未造成任何角膜损伤。
