摘要
本文通过 134例后房型人工晶体植入眼 ,分不同眼轴长度 ,比较了 SRK- 公式与第三代理论公式预测人工晶体屈光度的准确性。对短轴眼 (L≤ 2 2 mm)和中轴眼 (2 2 m<L≤ 2 4.5 mm )而言 ,各公式无明显差别 ;但对长轴眼 (L >2 4.5 mm) ,SRK- 公式则出现了较为明显的误差 :SRK- 公式有 15 %的误差超出 2 D,而 Holladay公式仅有 2 % ,Hoffer- Q和 SRK/ T则无大于 2 D的误差。各第三代理论公式对轻度长轴眼 (2 4.5 <L≤ 2 7mm)和高度长轴眼 (2 7mm<L≤ 2 8.4mm )的预测 ,只在临床上优于 SRK- 公式 ,但对极度长轴眼 (L >2 8.4mm) ,无论从统计学上 (P<0 .0 5 )或临床上均比 SRK- 公式准确。故认为第三代理论公式比SRK- 公式更适合于中国人眼 ,建议有条件的眼科医师选择第三代人工晶体计算公式 。
We compared the predictive accuracy of the SRK Ⅱ formula to Hoffer Q,Holladay and SRK/T formula in 134 posterior chamber IOL cases.In the short eyes(L≤22mm)and normal length eyes(22mm<L≤24 5mm),all formulas performed well.In long eyes(L>24 5mm),SRK-Ⅱ formula gave poorer results than the others:SRK Ⅱ formula had 15% cases with greater than 2D of error,while Holladay had 2%,Hoffer Q and SRK/ T had none.In the morderately long eyes(24 5<L≤27mm) and the very long eyes(27mm<L≤28 4mm),the third theoretical formulas performed clinically better than SRK Ⅱ formula.In the extremely long eyes(L>28 4mm),SRK Ⅱ formula is statistically and clinically less accurate than the third theoretical formulas.The third theoretical formula were believed more suitable to the Chineses eyes.We suggest that the third theoretical formulas be used to improve the accuracy of IOL power calculations.
出处
《中国实用眼科杂志》
CSCD
2000年第3期139-142,共4页
Chinese Journal of Practical Ophthalmology
