应用SRK II公式计算轴性高度近视患者的人工晶状体度数。

Calculation of intraocular lens power with the SRK II formula for axial high myopia.

作者信息

Yalvaç I S, Nurözler A, Unlü N, Cetinkaya F, Kasim R, Duman S

机构信息

Eye Department, Ankara Hospital, Turkey.

出版信息

Eur J Ophthalmol. 1996 Oct-Dec;6(4):375-8. doi: 10.1177/112067219600600405.

DOI:10.1177/112067219600600405

PMID:8997577

Abstract

AIM

The SRK II formula has been widely used for intraocular lens (IOL) power calculations. The predictability of this formula is evaluated in axial myopic patients.

METHODS

Planned extracapsular cataract extraction and posterior chamber IOL implantation (PECCE + IOL) were performed on 98 eyes of 98 patients with axial length > 24.5 mm. Cases had no preoperative complications and postoperative visual acuity was at least 0.5 (Snellen). Corneal refractive power and axial length were measured preoperatively and emmetropic IOL power calculations were made using the SRK II formula. Long-term (mean 4.7 months) visual acuities and refractions were noted postoperatively.

RESULTS

The absolute refractive error was < 1.00 Diopters (D) in 57 eyes (58.2%) and < 2.00 D in 83 eyes (84.7%). The mean absolute error of the SRK II formula in axial myopia was 1.16 D +/- 0.78 SD.

CONCLUSIONS

The SRK II formula is not very accurate in axial myopic patients.

摘要

目的

SRK II公式已广泛用于人工晶状体（IOL）屈光度计算。本研究评估该公式在轴性近视患者中的预测准确性。

方法

对98例眼轴长度>24.5 mm的患者的98只眼进行了计划性囊外白内障摘除联合后房型人工晶状体植入术（PECCE + IOL）。所有病例术前均无并发症，术后视力至少为0.5（Snellen视力表）。术前测量角膜屈光力和眼轴长度，并使用SRK II公式计算正视眼人工晶状体屈光度。术后记录长期（平均4.7个月）视力和屈光情况。