Comparison of the efficacy of two new multifunctional intraocular lenses in correcting presbyopia

Abstract

AIM: To compare the visual effect of patients with presbyopia corrected by bifocal(AtLisa tri 809MP)intraocular lens(IOL)and trifocal(AtLisa tri 839MP)IOL implantation.METHOD:A total of 40 patients(51 eyes)who underwent cataract phacomulsification surgery in our hospital were collected, and they were retrospectively analyzed and divided into group A and group B. The group A with 20 patients(25 eyes)implanted the bifocal 809MP IOL, while the group B with 20 patients(26 eyes)implanted the trifocal 839MP IOL. The uncorrected distance visual acuity(UDVA), uncorrected intermediate distance visual acuity(UIVA), uncorrected near distance visual acuity(UNVA), and the defocus curve of the patients in two groups were measured at 3mo after surgery. Additionally, statistical analysis was carried out through satisfaction questionnaire.RESULT:There were no significant differences in the UDVA and best corrected visual acuity(BCVA)between the two groups at 3mo after surgery(P>0.05). In group B, the UIVA(80cm)was significantly better than that in group A(P0.05). The defocus curve analysis at 3mo after surgery revealed that the group A had double peaks at 0D and -3D; while the group B had double peaks at 0D and -2.5D. Patients in the two groups showed different degrees of halo, glare and other optical manifestation, but the overall satisfactions and the near vision satisfactions were higher.CONCLUSION: Two types of IOL can provide patients with full range of vision that including both near and far distance visual acuity. Both of the AtLisa tri 839MP IOL and 809MP IOL can provide good near vision, while the trifocal IOL is more suitable for intermediate distance vision.

Keywords

• bifocal intraocular lens
• trifocal intraocular lens
• visual quality
• defocus curve