不同直径折叠人工晶状体眼波阵面像差的研究

Analysis of higher-order aberrations of patients after phacoemulsification and implanted different diameter intraocular lenses

目的通过研究不同直径人工晶状体眼波阵面像差的差异,探讨其相关性,以期为临床合理选择人工晶状体提供依据。方法选择白内障患者96人(104眼)随机分为两组进行手术并植入不同直径的人工晶状体。术后3个月观察术眼波阵面像差及其它相关的变化。结果1、瞳孔4.0mm时,两组的高阶像差均方根值(RMSh)分别为(0.16±0.05)μm,(0.13±0.05)μm;瞳孔5.0mm时,两组RMSh分别为(0.29±0.05)μm,(0.20±0.06)μm;瞳孔6.0mm时,两组RMSh分别为(0.36±0.10)μm,(0.28±0.05)μm;瞳孔7.0mm时,两组RMSh分别为(0.59±0.21)μm,(0.38±0.11)μm。2、瞳孔5.0mm时,两组的RMSh有显著差异(P<0.05)。结论1.人工晶状体眼的高阶像差随瞳孔直径增大亦增高;2.在瞳孔5.0mm时,植入5.5mm光学直径的人工晶状体眼的高阶像差均方根值比植入6.3mm光学直径的人工晶状体眼的高阶像差均方根值大。

Objective To compare the higher-order aberrations of patients with different diameter intraocular lenses(IOLs)in order to offer some clinical data to improve the optical designs of IOL. Methods 96 patients (104 eyes)were selected randomly to accepte phacoemulsification and implanted different diameter IOL.The wavefront aberrations were measured at 3 month post-operation. Results 1)For 4.0 mm pupil,the average higher-order root mean square(RMSh)values of the two groups were 0.16±0.05μm and 0.13±0.05μm.For 5.0 mm pupil,the RMSh were:0.29±0.05μm and 0.20±0.06μm.For 6.0 mm pupil,the RMSh were:0.36±0.10μm and 0.28±0.05μm.For 7.0 mm pupil,the RMSh were:0.59±0.21μm and 0.38±0.11μm.2)For 5.0 mm pupil,the RMSh were significantly different between the two groups( P <0.05). Conclusions 1)the larger the pupil is,the higher the RMSh is in the pseudophakic eye.2)For 5.0mm pupil,the RMSh of patients implanted 5.5 mm diameter IOLs was significant higher than that of patients implanted 6.3 mm diameter IOLs.