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Chinese Journal of Ophthalmologic Medicine(Electronic Edition) ›› 2022, Vol. 12 ›› Issue (04): 210-215. doi: 10.3877/cma.j.issn.2095-2007.2022.04.004

• Original Article • Previous Articles     Next Articles

Comparative analysis of visual quality after implantation different multifocal intraocular lens in patients with cataract

Xiaoyu Wang1, Yaxin Li2, Yiyun Liu1, Jiayi Geng1, Rui Qin1, Yancheng Li1, Mingxin Ao1, Dehai Liu1, Hong Qi1,()   

  1. 1. Department of Ophthalmology, Peking University Third Hospital, Beijing 100191, China
    2. Department of Ophthalmology, The First Hospital of Fangshan District, Beijing 102400, China
  • Received:2022-03-25 Online:2022-08-28 Published:2022-11-24
  • Contact: Hong Qi

Abstract:

Objective

To compare the visual quality of patients implanted the trifocal diffractive intraocular lens (IOL) and the segmented refractive bifocal IOL after cataract surgery.

Methods

Retrospective cohort study. From March 2019 to July 2020, 52 patients (104 eyes) with cataract phacoemulsification and IOL implantation in the Department of Ophthalmology of Peking University Third Hospital were collected. There were 17 males (34 eyes) and 35 females (70 eyes) with the average age of (69.3±11.2) years-old (ranged from 36 to 87 years-old). The patients were divided into segmented refractive group and trifocal diffractive group according to the type of IOL implanted. Lenstec SBL-3 IOL was implanted in segmented refractive group; AT LISA tri 839MP triple focus IOL was implanted in the trifocal diffractive group. The uncorrected distance visual acuity (UDVA), uncorrected intermediate visual acuity (UIVA), uncorrected near visual acuity (UNVA), best corrected distance visual acuity (BCVA), spherical equivalent (SE), defocus curve, objective visual quality, off-glasses rate, poor visual events, life quality and satisfaction were evaluated after surgery for 3 months. The questionnaire scores of two groups were expressed by (±s), independent sample t test was used for comparison between groups; UNVA, UIVA, UDVA, BCVA, modulation transfer function cut-off (MTF cut off), strehl ratio (SR), objective scatter index (OSI), contrast visual acuity (VA) and patient satisfaction were expressed by median and quartile intervals, compared by Mann-Whitney U test between groups. The distribution of SE, off-glasses rate and poor visual events were expressed in percentage, and chi-square test was used for comparison between groups. Spearman correlation analysis was used to analyze the correlation between objective visual quality and BCVA.

Results

The postoperative logMAR UNVA, UIVA, UDVA and BCVA of the trifocal diffractive group were 0.10(0.05, 0.10), 0.10(0.00, 0.20), 0.10(0.10, 0.20) and 0.00 (0.00, 0.05), and those of segmented refractive group were 0.05(0.00, 0.10), 0.10(0.00, 0.20), 0.10(0.00, 0.20) and 0.00(0.00, 0.05), respectively. There was a statistically significant difference in logMAR UNVA between two groups(Z=-2.596, P<0.05). The distribution of SE in ±0.25 D, ±0.50 D, ±0.75 D and ±1.00 D in the trifocal diffractive group were 34.6%, 65.4%, 90.4% and 100.0%, respectively; those of segmented refractive group were 57.7%, 71.2%, 78.9% and 92.4%. There was a statistically significant difference in the total distribution of SE (χ2=27.083, P<0.05). There was not a statistically significant difference in the average distribution of SE (t=0.667, P>0.05). The defocus curve analysis showed that there was a statistically significant difference in the logMAR BCVA when the spherical power was 2.00 D, -2.00 D and -2.50 D between two groups (Z=-2.378, -2.416, -2.821; P<0.05). After operation, the MTF cut off, SR, OSI, VA 100%, VA 20% and VA 9% in trifocal diffractive group were 27.7(21.2, 37.6) c/deg, 0.14(0.10, 0.21), 2.4(1.7, 2.9), 0.9(0.7, 1.3), 0.6(0.4, 0.8) and 0.3(0.2, 0.5); and those of segmented refractive group were 18.8(14.1, 24.4) c/deg, 0.11(0.09, 0.13), 2.4(1.8, 3.2), 0.6(0.5, 0.8), 0.4(0.3, 0.5) and 0.2(0.2, 0.3), respectively. There were significant correlations between MTF cut off, SR, OSI, VA 100%, VA 20%, VA 9% and logMAR BCVA in both patients (r=-0.352, -0.211, 0.542, 0.324, -0.314, -0.287; P<0.05). OSI was related with logMAR BCVA, which was bigger than others and there was not a statistically significant difference in OSI between groups (Z=-0.807, P>0.05). The total scores of visual function related quality of life questionnaire in two groups were (88.28±11.41) scores and (87.43±12.62) scores; the rates of mirror removal rate were 80.8% and 84.6%; the rates of poor visual quality was 23.1% and 19.2%; the satisfaction distribution were 3(3, 4) and 3(3, 4), respectively.

Conclusions

Both 839 MP and SBL-3 multifocal IOLs can improve the subjective and objective visual quality of cataract patients after surgery, and the effectiveness, accuracy, spectacle independence, and patient satisfaction of the two groups of patients are similar. Apart from that, the postoperative UNVA of SBL-3 was better than that of 839MP; the objective visual quality results (MTF cut off, SR, VA) of 839MP were better than those of SBL-3. OSI can be used for early detection of complications such as posterior capsular opacification and selection of surgical opportunity.

Key words: Cataract, Intraocular lens, Visual quality, Spectacle independence

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