Ocular Higher-order Aberrations And Contrast Sensitivity After Cataract Surgery With AcrySof IQ Intraocular Lens Implantation

【Purpose】:Comparing high-order aberration and contrast sensitivity after implantation of apherical lens(Acrysof IQ)or spherical lens(Acrysof Natural)and normal elderly eyes.【Methods】:In a nonrandomized parallel cohort investigation.46 senile cataract patients(49 eyes)were classified into two groups.Group A(29eyes)with Acrysof IQ IOL implanted and Group B(20eyes)with Acrysof Natural IOL implanted.Group C(29eyes)are the normal elderly eyes.At 3 months,best corrected visual acuity(BCVA),contrast sensitivity,aberration and operative complication were measured.【Results】:Mean best corrected visual acuity(BCVA)of all groups were similar.Group A and B had significant lower high-order aberration(HOA)than group C(P＜0.05).The difference in HOA between group A and B was not statistically.Group A had significant lower spherical aberration comparing with group B and C.The difference in spherical aberration between group B and C was not statistically.Mean coma aberration was similar between groups.In no-glare condition,group A had higher contrast sensitivity than group B in 6.3°visual angle, with the contrast sensitivity in 4.0°,2.5°,1.6°,1.0°,0.7°visual angles was similar.Group A and B were superior in all visual angle than group C.In glare condition,group A had higher contrast sensitivity than group C in 2.5°,1.6°,1.0°,0.7°visual angles.46 patients had no postoperative complication.【Conclusions】:The clinical results indicate that the spherical aberration of the eyes after cataract surgery can be eliminated by modifing the finterior surface of the IOL.The Acrysof IQ lens compensates for the positive spherical aberration in elder eyes and improves contrast sensitivity,thus gets better visual performance.