Optical Quality Of Acrysof IQ Aspheric Intraocular Lens

[ Purpose ] To study optical wafront aberrations (high-order, spherical aberration, coma) and contrast sensitivity in eyes having uneventful cataract surgery and in-the-bag implantation of an aspheric Acrysof IQ intraocular lens (IOL) (AMO) or a spherical Acrysof Natural IOL (AMO), and compare the results with those in a group of normal young-middle aged eyes.[Methods] Nonrandomized clinical trial.46 patients with age-rated cataract (49 eyes) were divided into two groups:Acrysof IQ IOL group included 27 patients (29 eyes) and Acrysof Natural IOL group included 19 patients(20 eyes).Normal 30 young-middle aged people(30 eyes) as a control group.CGT-1000 Contrast Glare tester and ARK-1000 OPD-Scan were used in the patients of postoperative three months and normal young-middle aged people,to compare wavefront aberrations and contrast sensitivity between these three groups.[Results] The mean internal spherical aberration between IQ and control groups was similar (p>0.05),but statistically significant lower than spherical aberration of Natural group(p<0.05).The mean internal high order aberration and coma between IQ and Natural group were similar (p>0.05),but statistically significant higher than those of control groups(p<0.05).The contrast sensitivity (CS) of IQ group was similar to control group in low spatial frequency (6.3degrees,nor glare) (p>0.05),but were statistically significant lower than control group in other spatial frequency (p<0.05),as well as the results of Natural group in all spatial frequency (under the condition of glare or not) (p<0.05).CS of Natural group were significant lower than IQ group in low spatial frequency (6.3degrees,nor glare; 6.3 and 4.0 degrees, glare;) (p<0.05),but similar in other spatial frequency.[Conclusion ] IQ Aspheric IOL can eliminate the spherical aberration of eyes after cataract surgery, and improve the contrast sensitivity. It was better than spherical IOL.