Lopatynsky M, Cohen E J, Leavitt K G, Laibson P R
Cornea Service, Wills Eye Hospital, Philadelphia, PA 19107.
CLAO J. 1993 Jan;19(1):41-4. doi: 10.1097/00140068-199301000-00007.
Computerized videokeratography may facilitate rigid gas permeable (RGP) contact lens fitting in post-penetrating keratoplasty (post-PK) eyes. We used the EyeSys Corneal Analysis System to create topographic maps of 19 post-PK eyes from October 1990 to April 1991. An initial trial lens was selected based on the average keratometric value from two separate topographic color maps. A standard protocol was used to select the initial trial lens on the basis of computer generated topographic keratometry readings. Final lens selection was based on clinical performance. A comparison of the base curve of the initial contact lens selected using computerized videokeratography and the base curve that would have been selected by standard keratometry showed a statistically significant difference (P = 0.02). Three month follow-up data were also evaluated. There was no statistically significant difference between the base curve of the initially dispensed contact lens and the base curve of the lens worn after 3 months. However, modifications in the fit were made in 9 of 19 patients. Two patients were RGP contact lens failures and were refit with SoftPerm lenses.
计算机化的角膜地形图仪可能有助于穿透性角膜移植术后（post-PK）眼睛的硬性透气性（RGP）隐形眼镜验配。我们使用EyeSys角膜分析系统，于1990年10月至1991年4月对19只穿透性角膜移植术后的眼睛制作了地形图。根据两张不同的地形图彩色图上的平均角膜曲率值选择初始试验镜片。采用标准方案，根据计算机生成的地形图角膜曲率读数选择初始试验镜片。最终镜片的选择基于临床表现。对使用计算机化角膜地形图仪选择的初始隐形眼镜的基弧与通过标准角膜曲率计选择的基弧进行比较，结果显示有统计学显著差异（P = 0.02）。还评估了三个月的随访数据。最初配发的隐形眼镜的基弧与佩戴3个月后的镜片基弧之间无统计学显著差异。然而，19例患者中有9例的镜片适配进行了调整。2例患者佩戴RGP隐形眼镜失败，改用SoftPerm镜片重新验配。
