Achieving additional myopic correction in undercorrected radial keratotomy eyes using the Lexington RK splint design.

The CLAO journal : official publication of the Contact Lens Association of Ophthalmologists, Inc Pub Date : 1999-01-01

B H Koffler, V M Smith, L D Clements

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Abstract

Purpose: To reshape or flatten the corneas of post-radial keratotomy (RK) patients with residual myopia to improve uncorrected vision.

Methods: Twenty-one eyes (12 patients) with undercorrected RK results were fit with the Lexington RK splint, a multicurve plateau concept RGP contact lens.

Results: After wearing the lens an average of 6.1 months, undercorrected visual acuity improved an average 3.4 lines; change in spherical equivalent averaged 0.77 D; and flat K change averaged 0.75 D. Seventeen of 21 eyes (81%) demonstrated improved uncorrected vision. Nine eyes (43%) subsequently had a decrease in vision after discontinuing lens wear. Patients fit within 7 months of their last RK procedure were more likely to achieve optimal results. Sixty-two percent of this group did not require glasses or contact lenses (range: 4 to 21 months).

Conclusions: A well-designed and fit plateau RGP contact lens can manipulate the healing post-RK cornea.

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使用Lexington RK夹板设计在未矫正的桡骨角膜切开术眼中实现额外的近视矫正。

目的:对桡骨角膜切开术(RK)后残余近视患者的角膜进行整形或压平，以改善未矫正视力。方法:21只眼(12例)的RK矫正结果不全，采用Lexington RK夹板(一种多曲线平台概念RGP隐形眼镜)进行拟合。结果:配戴后平均6.1个月，未矫正视力平均提高3.4线;球面等效变化平均0.77 D;平均K值为0.75 d, 21只眼中有17只(81%)未矫正视力得到改善。9只眼(43%)在停止佩戴晶状体后视力下降。在最后一次RK手术后7个月内适合的患者更有可能获得最佳结果。这组人中有62%不需要眼镜或隐形眼镜(范围:4到21个月)。结论:设计良好、贴合良好的平台型RGP隐形眼镜可控制rk术后角膜的愈合。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The CLAO journal : official publication of the Contact Lens Association of Ophthalmologists, Inc

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