Gundel R E
J Am Optom Assoc. 1988 Mar;59(3):206-8.
Several authors have advocated reducing cylinder power when fitting soft toric lenses. One rationale for this reduction is the formation of a tear lens due to incomplete flexure. Using toric lenses of various thickness (0.06-0.14 mm), I was unable to demonstrate the existence of a tear lens under thin or standard thickness Hydron toric lenses. In the absence of such a tear lens, it seems reasonable to use the same cylinder power in a soft toric lens as would be used if prescribing spectacles.
几位作者主张在验配软性环曲面透镜时降低柱镜度数。这种降低的一个理由是由于不完全弯曲而形成泪液透镜。使用各种厚度（0.06 - 0.14毫米）的环曲面透镜，我未能证实在薄型或标准厚度的Hydron环曲面透镜下存在泪液透镜。在不存在这种泪液透镜的情况下，在软性环曲面透镜中使用与开处方眼镜时相同的柱镜度数似乎是合理的。
