Tomlinson A, Schoessler J, Andrasko G
Am J Optom Physiol Opt. 1980 Oct;57(10):714-20. doi: 10.1097/00006324-198010000-00003.
A group of 10 subjects were optimally fitted with soft senses by photoelectronic keratoscopic analysis of corneal form. Lenses with diameters of 12.8 and 13.5 mm were worn incorporating prism ballasting varying between 0 and 1.5 delta in 0.25 delta steps and truncation between 0 and 2.0 mm in 0.5-mm steps. The performance of each lens was evaluated according to eight commonly applied clinical criteria: visual stability, lens position, recentering ability, amount and direction of movement, subjective comfort, meridional location of the lens, and amount of blink-initiated rotation. No benefit in performance was obtained from incorporating larger amounts of prism and truncation in the lens design, the best combination being 0.75 delta with 0.5-mm truncation. As a single stabilizing feature, truncation appeared more effective in locating a lens in the correct meridian than prism ballasting. It was found that corneal-fitting soft lenses of differing diameters (between 12.8 and 13.5 mm) performed similarly with the same stabilizing features.
通过角膜形态的光电角膜镜分析，为10名受试者最佳适配了软性隐形眼镜。佩戴的镜片直径分别为12.8毫米和13.5毫米，棱镜压重介于0至1.5棱镜度之间，以0.25棱镜度为步长变化，截平量介于0至2.0毫米之间，以0.5毫米为步长变化。根据八项常用的临床标准对每片镜片的性能进行评估：视觉稳定性、镜片位置、复位能力、移动量和移动方向、主观舒适度、镜片的子午线位置以及眨眼引发的旋转量。在镜片设计中增加棱镜和截平量并未带来性能提升，最佳组合是0.75棱镜度与0.5毫米截平量。作为单一的稳定特征，截平在将镜片定位在正确子午线上似乎比棱镜压重更有效。研究发现，不同直径（12.8至13.5毫米）的角膜塑形软性隐形眼镜在具有相同稳定特征时表现相似。
