Purpose

The present study aimed to estimate how orientation position, recovery time, and contact lens decentration, associated with visual performance, may vary on several designs of the most recent toric silicone-hydrogel toric contact lenses in two-time different moments.

Methods

To evaluate the toric silicone-hydrogel toric contact lens position and stability, it was conducted with a prospective, observational, randomized, and single-center case series including 95 astigmatic eyes wearing four toric silicone-hydrogel toric contact lenses for two weeks. Orientation and decentration were analyzed with ImageJ software from video-frames extracted with a Python application. Recovery time was evaluated after 45 degrees of inferior-temporal misorientation.

Results

Evaluation of misorientation after 20 min of wear revealed the highest amount for Saphir RX, −20.41 ± 10.84 deg, and lowest for Air Optix Aqua for Astigmatism, −1.43 ± 7.48 deg. The highest horizontal misalignment was found for Air Optix Aqua for Astigmatism, −0.627 ± 0.330 mm, and lowest for Biofinity Toric, 0.004 ± 0.270 mm. Vertical misalignment presented the highest value for Acuvue Vita for Astigmatism, −0.652 ± 0.369 mm, and lowest for Air Optix Aqua for Astigmatism, −0.126 ± 0.231 mm. Recovery time showed the highest amount for Saphir RX, 80.70 ± 33.26 s, and lowest for Biofinity Toric 43.67 ± 23.70 s. Only Air Optix Aqua for Astigmatism presented significant differences after two-week of wear for misorientation (P = 0.02) and horizontal misalignment (P < 0.001). When pairwise comparisons are made between toric silicone-hydrogel toric contact lenses, significant differences (P < 0.001) are found.

Conclusions

Although there was acceptable fitting, based upon decentration, orientation, and recovery with the study contact lenses, the stabilization and profile design used in the Air Optix Aqua for Astigmatism helped to minimize rotation and vertical misalignment. In addition, the peri-ballast and thickness profile of the Biofinity Toric improved rotational recovery and horizontal misalignment compared to the other contact lenses. Finally, lenses with a better fitting profile showed better visual performance.

中文翻译：

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不同复曲面硅水凝胶隐形眼镜静态和动态行为的客观评价

目的

本研究旨在估计与视觉性能相关的定向位置、恢复时间和隐形眼镜偏心如何在两次不同时刻在最新的复曲面硅水凝胶复曲面隐形眼镜的几种设计中发生变化。

方法

为了评估复曲面硅水凝胶复曲面隐形眼镜的位置和稳定性，我们进行了一项前瞻性、观察性、随机和单中心病例系列研究，包括 95 只散光眼，佩戴四颗环硅水凝胶复曲面隐形眼镜两周。使用 ImageJ 软件从 Python 应用程序提取的视频帧中分析了方向和偏心。下颞侧定向障碍 45 度后评估恢复时间。

结果

佩戴 20 分钟后对错误方向的评估显示，Saphir RX 的最大量是 -20.41 ± 10.84 度，而 Air Optix Aqua 的散光量最低，-1.43 ± 7.48 度。用于散光的 Air Optix Aqua 的水平偏差最高，为 -0.627 ± 0.330 mm，而 Biofinity Toric 的最低水平偏差为 0.004 ± 0.270 mm。Acuvue Vita 散光的垂直偏差值最高，-0.652 ± 0.369 毫米，Air Optix Aqua 散光的最低值，-0.126 ± 0.231 毫米。Saphir RX 的恢复时间最高，为 80.70 ± 33.26 s，Biofinity Toric 的恢复时间最低，为 43.67 ± 23.70 s。佩戴两周后，只有 Air Optix Aqua 散光在定向错误 ( P = 0.02) 和水平错位 ( P< 0.001)。当在复曲面硅水凝胶复曲面隐形眼镜之间进行成对比较时，发现显着差异（P < 0.001）。

结论

尽管根据研究隐形眼镜的偏心、定向和恢复情况，佩戴是可以接受的，但用于散光的 Air Optix Aqua 中使用的稳定性和轮廓设计有助于最大限度地减少旋转和垂直错位。此外，与其他隐形眼镜相比，Biofinity Toric 的围压载和厚度分布改善了旋转恢复和水平错位。最后，具有更好拟合轮廓的镜片显示出更好的视觉性能。