Clinical outcomes of bifocal and trifocal intraocular lens during a 1-year follow-up
Objective:To evaluate and compare the clinical outcomes of bifocal and trifocal intraocular lens(IOL)in patients at 12 months after implantation.Methods:Retrospective collection of 40 cataract patients(40 eyes)who were treated in Yixing People's Hospital from January 2019 to November 2021 were divided into two groups according to different types of IOL,20 patients(20 eyes)in the observation group were treated with AT LISA tri 839MP IOL implantation,20 patients(20 eyes)in the control group were treated with AT LISA 809M IOL implantation.Examinations including distance,intermediate and near visual acuity,defocus curves,contrast sensitivity values for different spatial frequencies,spectacle independence,overall satis-faction and National Eye Institute Visual Function Questionnaire 25(NEI-VFQ-25)were measured at 12 months postopera-tively.Results:No statistically significant differences between groups were found in uncorrected distant visual acuity,corrected distance visual acuity,uncorrected near visual acuity,distance corrected near visual acuity and contrast sensitivity values(all P>0.05);uncorrected intermediate visual acuity and distance corrected intermediate visual acuity in observation group was significantly higher than that in control group(P<0.05),and the middle focal segment of the defocus curve declined more gently;the observation group was better than the control group in the degree of spectacle independence,overall satisfaction and NEI-VFQ-25 score(P<0.05).Conclusions:Bifocal and trifocal IOLs are able to provide effective and stable visual restoration after cataract surgery in the long term,while the trifocal IOL can achieve improved intermediate visual acuity and vision-related quality of life.
cataracttrifocal intraocular lensbifocal intraocular lensdefocus curvevision-related quality of life
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