Harris M G, Laconic M, Ward J
Am J Optom Physiol Opt. 1978 Jan;55(1):15-8. doi: 10.1097/00006324-197801000-00003.
We fitted each of 20 eyes with 3 different Hydrocurve contact lenses: (1) spherical with prism ballast, (2) back-toric without prism ballast, and (3) back-toric with prism ballast. We monitored the stability of the lenses. The prism-ballast lenses were generally stable on corneas with zero to 3.5 DK of with-the-rule toricity; the back-toric nonprism lenses were not stable.
我们为20只眼睛中的每只眼睛佩戴了3种不同的Hydrocurve隐形眼镜：（1）带棱镜配重的球面镜片，（2）无棱镜配重的后环曲面镜片，以及（3）带棱镜配重的后环曲面镜片。我们监测了镜片的稳定性。带棱镜配重的镜片在角膜规则性散光为零至3.5DK的情况下通常是稳定的；无棱镜的后环曲面镜片不稳定。
