放射狀角膜切開術的臨床報告

放射狀角膜切開術(Radial Keratotomy)是以手術方法將角膜切開，使角膜弧度變為平坦，而近視度數減少的一種有效方法。從民國75年8月到民國76年7月，總共有96位病，171隻眼睛，在本院接受手術。所有的病人至少追蹤檢查九個月。吾等將病人依近視度數分為三組：低度數組(Lower group)由－2到－3D，中度組(Middle group)由－3到－6D，高度數組由－6到－12D。我們使用鑽石刀片來切割角膜，刀片深度依超音波角膜厚度測量儀(Ultrasonic pachymetry)所測量的角膜厚度而定。術後九個月，球面當量度數(Spherical equivalent)，在低度組平均進步2.52D，中度組平均進步3.67D，高度組平均進步4.23D。近視度數介於－1D到＋1D者，低度組占95.2%，中度組占55.5%，高度組占4.16%。未矯正視力大於0.5者，低度組占100%，中度組占77.7%，高度組占62.5%。併發症常見的是矯正不足，目眩(Glare)或視力不穩(Fluctuating vision)。總之，放射狀角膜切開術，對於低度數的近視（-2到－4D），效果相當好。

關鍵字

無資料

並列摘要

Form Aug. 1986 to July 1987 (one year), a total of 96 p'ts (171 eyes) with non progressive myopia ranging from -2 to -12D underwent radial keratotomy. All patients were followed up at least 9 months. The patients were classified into 3 groups: the lower group: -2 to -3D, the middle group: -3 to -6D and the higher group: -6 to -12D. The surgical technique consisted of 8 incisions or 4 incisions using a diamond micrometer knife with the blade length determined by ultraosnic pachymetry reading of paracentral cornea and the diameter of the central optic zone determined by the preoperative refractive error. The mean change in spherical equivalent after 9 months was 2.52D in the lower group, 3.67D in the middle group and 4.23D in the higher group. At 9 months after surgery, the eyes within one diopter of emmetropia were 95.2% in the lower group, 55.5% in the middle group and 4.16% in the higher group. Uncorrected visual acuity was 20/40 or better in 100% of eyes in the lower group, 77.7% of eyes in the middle group, 62.5% of eyes in the higher group. Minor complications were common such as under correction, glare and fluctuating vision. The operation was more satisfactory in eyes with a preoperative refractive error between -2.0 and -4.D.

並列關鍵字

Radial Keratotomy ； Cycloplegic refraction ； Glare ； Fluctuating Vision

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放射狀角膜切開術的臨床報告

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