空海勤人员正视眼高阶像差和视觉质量

目的:分析正视眼高阶像差的相关因素及其与对比敏感度的关系,为评估高阶像差的临床意义及其与视功能的关联性,为临床准分子激光个体化切削手术的合理应用提供客观依据。方法:利用波阵面像差仪(WaveLight analyzer,德国)和对比敏感度仪(Kontrastometer BA-4,德国)对40例80眼空勤和海勤男性进行检测,年龄16~35(平均21.9±3.4)岁,裸眼视力(uncorrected visual acuity,UCVA)为1.0~2.0,平均(1.32±0.30)。结果:左右眼高阶像差差异无统计学意义(P>0.05)。C3-1(垂直彗差)与远近视力呈负相关趋势(r<0,P>0.05)。C3-1与柱镜呈之间的负相关有统计学意义,C3-1与等效球镜在瞳孔<7mm时的负相关有统计学意义,C40(球面像差)与球镜在瞳孔>5mm时的正相关有统计学意义(P<0.05)。RMS3~6,RMSh与球镜、柱镜、等效球镜的相关性无统计学意义(P>0.05)。C3-1,RMS3,RMSh与年龄的负相关有统计学意义(P<0.01),C40与年龄的相关性无统计学意义(P>0.05)。在瞳孔直径为4mm和7mm时,C40,RMS3,RMS4,RMSh的差异有统计学意义(P<0.01),C3-1的差异无统计学意义(P>0.05)。C3-1与WOG(对比敏感度系数之一,值越小对比敏感度越高)在瞳孔≥5mm时的正相关有统计学意义(P<0.05),C3-1与其他对比敏感度系数呈正相关趋势(r>0,P>0.05)。结论:眼别对正视眼高阶像差无影响。年龄<40岁者高阶像差随年龄增加而减少,并随瞳孔增大而增加。C3-1趋向于越小,即负值越大,视力越好,对比敏感度越佳。

High-order aberrations and Visual quality analysis in emmetropic eyes of navy and air-force

AIM:To analyze high order aberrations(HOAs)and contrast sensitivity(CS)in emmetropic eyes,and supply the data to evaluate clinical significance and relationship.· METHODS:Forty cases(80 eyes)from navy or air-force volunteers(all males,16-35 years,mean age 21.9±3.4 years)were checked.Uncorrected visual acuity(UCVA)was 1.32±0.30(1.0-2.0).Aberration and CS analysis was based on the Tscherning theory from the Wave Light Company(Germany)and from Kontrastometer BA-4(BKG MEDIZIN TECHNIK,Germany).· RESULTS:There was no significant difference in high-order aberrations between the left and right eyes.No significant relationship but a negative correlation appeared between C3-1 and UCVA.There was a negative correlation between C3-1and cylinder(P<0.05)/spherical equivalence(P<0.05)when pupil size <7mm.There was a positive relationship between C40 and sphere(P<0.05)when pupil size >5mm.No significant relationship was shown between RMS3-6/RMSh and sphere/cylinder/spherical equivalence(P>0.05).There was a negative relationship between C3-1/RMS3/RMSh and age(P<0.01),but no relationship was shown between C40 and age(P>0.05).No significant difference was presented between 4mm and 7mm pupil diameter in C3-1(P>0.05),but there was a significant difference in C40(P<0.01)and in RMS3/RMS4/RMSh(P<0.01).There was a positive correlation between C3-1and WOG(CS coefficient without glare)(P<0.05)when pupil size ≥5mm.No significant relationship but a positive trend was shown between C3-1 and other CS coefficients.· CONCLUSION:For HOAs in emmetropic eyes,there are no significant differences between the left and right eyes.HOAs has a negative relationship with age and a positive relationship with pupil size(age<40 years).There is a trend that with a decrease in C3-1,the more negative C3-1 is,the better UCVA and CS become.