AIM:To evaluate functional outcomes after bilateral implantation of apodized diffractive aspheric acrylic intraocular lenses (IOLs) with a +3.0 or +4.0 diopter (D) addition (add) power. ·METHODS:Totally 36 patients 40 eyes with senile cataract underwent Phaco and AcrySof IQ ReSTOR IOL [an AcrySof IQ ReSTOR IOL with a +4.0D add power (+4.0D group,n=20) or an AcrySof IQ ReSTOR IOL with a +3.0D add power (+3.0D group,n=20)] implantation. At the postoperative month 3,visual acuity[distance,intermediate(60cm) and near vision(40cm)],contrast sensitivity,defocus testing,patient-reported outcomes,and safety measures were assessed. ·RESULTS:Of the 36 patients 40 eyes,20 were in the +3.0D group and 20 were in the +4.0D group. Binocular distance-corrected intermediate visual acuity was significantly better in the +3.0D group than that in the +4.0D group (P<0.01); there was no difference in binocular near or distance visual acuity. There were no statistically significant differences in visual disturbances between the 2 groups. ·CONCLUSION:Compared with the aspheric IOL AcrySof ReSTOR +4D,AcrySof ReSTOR +3D has better quality of distance,intermediate and near vision(especially in the intermediate vision),higher spectacle independence and satisfaction.