Bufidis T, Konstas A G, Mamtziou E
University Department of Ophthalmology, AHEPA Hospital, Thessaloniki, Greece.
CLAO J. 1998 Oct;24(4):206-9.
The purpose of this study was to determine the clinical utility of computerized corneal topography (CCT) in the fitting of rigid gas permeable (RGP) contact lenses.
In this prospective study, we compared the clinically determined parameters to those obtained by CCT in 50 consecutive patients who underwent RGP lens fitting. The TMS-1 program was used for CCT, and we fit patients with Boston RGP contact lenses (type II, or Equalens). The final decision on the RGP lenses dispensed relied upon the clinical evaluation (slit lamp examination, fluorescein pattern, lens centration, and visual acuity).
The base curve of RGP lenses proposed by CCT was similar to that selected clinically (mean: 7.74 mm versus 7.81 mm). However, the mean diameter of the CCT proposed lenses was smaller than that selected clinically (9.31 mm versus 9.6 mm, P < 0.01). Divergence was more pronounced in keratoconus.
CCT is an important tool in RGP contact lens fitting. Clinical evaluation remains mandatory in determining the appropriate RGP lens.
本研究的目的是确定计算机化角膜地形图（CCT）在硬性透气性（RGP）隐形眼镜验配中的临床应用价值。
在这项前瞻性研究中，我们将50例连续接受RGP镜片验配患者的临床确定参数与CCT获得的参数进行了比较。使用TMS-1程序进行CCT检查，我们为患者验配波士顿RGP隐形眼镜（II型或Equalens）。所配发RGP镜片的最终决定取决于临床评估（裂隙灯检查、荧光素图案、镜片中心定位和视力）。
CCT建议的RGP镜片基弧与临床选择的基弧相似（平均值：7.74毫米对7.81毫米）。然而，CCT建议的镜片平均直径小于临床选择的直径（9.31毫米对9.6毫米，P<0.01）。圆锥角膜患者的差异更为明显。
CCT是RGP隐形眼镜验配中的一项重要工具。在确定合适的RGP镜片时，临床评估仍然必不可少。
