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Journal List > J Korean Ophthalmol Soc > v.50(11) > 1008411

Kim, Lee, Chung, Kim, and Kim: Combined Implantation of Monofocal and Multifocal Intraocular Lenses in Senile Cataract Surgery

Abstract

Purpose

To assess binocular visual outcomes in patients who were implanted with a monofocal IOL (intraocular lens) in one eye and a multifocal IOL in the contralateral eye or with a bilateral multifocal IOL.

Methods

This study enrolled 15 patients (30 eyes) implanted with a monofocal IOL in one eye and a multifocal IOL in the contralateral eye (5 patients, group 1) or with a bilateral multifocal IOL (10 patients, group 2). Binocular visual acuity (uncorrected/best distance corrected near, intermediate, and distance vision), binocular uncorrected reading speed, and contrast sensitivity were assessed at 6 months following the last implantation. Patient's quality of life (overall satisfaction, halos and glare presence, and spectacle dependence) was also assessed using a questionnaire at 6 months postoperatively.

Results

There was significant difference in the uncorrected and corrected near visual acuity between the 2 groups in the mesopic condition. There was no significant difference in visual acuity, reading speed and contrast sensitivity in other conditions between the 2 groups. Spectacle dependence rate was 60% in group 1 and 20% in group 2. The glare symptom was present in 60% of patients in both groups and the halo symptom was present in 3 out of 10 patients in group 2. Overall satisfaction score was not significantly different between the groups.

Conclusions

The combined implantation of a monofocal and a multifocal lens revealed similar visual outcomes compared to bilateral multifocal IOL implantation except for near vision. In addition, the results showed similar patient satisfaction in both groups.

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References

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jkos-50-1632f1.tif
Figure 1.
Mean binocular postoperative visual acuities of 2 groups at photopic condition (A) and mesopic condition (B). There was significant difference in the uncorrected (UCNVA) (p=0.048, Mann-Whitney U test) and corrected near visual acuity (BCNVA) (p=0.027, Mann-Whitney U test) between two groups only in the mesopic condition (B).* Statistically significant in Mann-Whitney test (p<0.05). UCNVA=uncorrected near visual acuity; UCIVA=uncorrected intermediate visual acuity; UCFVA=uncorrected far visual acuity; BDCNVA=best distance corrected near visual acuity; BDCIVA=best distance corrected intermediate visual acuity; BDCFVA=best distance corrected far visual acuity.(Group 1=combined implantation; Group 2=bilateral multifocal implantation)
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jkos-50-1632f2.tif
Figure 2.
Postoperative binocular reading speed results in the 2 groups at 6 Months. There was no statistically significant difference between the 2 groups.
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jkos-50-1632f3.tif
Figure 3.
Contrast sensitivity test in the 2 groups at photopic condition (A) and mesopic condition (B). There was no statistically significant difference between the 2 groups.
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Table 1.
Type of intraocular lens in the 2 groups
    Intraocular lens
Group 1 Patient 1-1 SA60AT ZM900
  Patient 1-2 SN60WF ZM900
  Patient 1-3 SN60WF ZM900
  Patient 1-4 SA60AT ZM900
  Patient 1-5 SN60WF ZM900
Group 2 Patient 2-1 ZM900 ZM900
  Patient 2-2 ZM900 ZM900
  Patient 2-3 ZM900 ZM900
  Patient 2-4 ZM900 ZM900
  Patient 2-5 ZM900 ZM900
  Patient 2-6 ZM900 ZM900
  Patient 2-7 ZM900 ZM900
  Patient 2-8 ZM900 ZM900
  Patient 2-9 ZM900 ZM900
  Patient 2-10 ZM900 ZM900

Group 1=combined intraocular lens implantation

Group 2=bilateral multifocal intraocular lens implantation

ZM900 (Tecnis, Advanced Medical Optics Inc., Santa Ana, Calif)

SA60AT, SN60WF (AcrySof, Alcon Laboratories Inc., Dallas, TX).

Table 2.
Preoperative characteristics of participants
  Group 1 Group 2 p-value
No. of patients 5 10
No. of eyes 10 20
Age (yr) mean (± SD) 65.50 (±1.29) 65.50 (±7.19) 0.864
Gender (M/F) 2/3 3/7 0.547
SE* mean (± SD) +1.25 (±0.35) +1.62 (±0.77) 0.547
UCVA mean (± SD) 0.40 (±0.07) 0.30 (±0.19) 0.494

*SE=spherical equivalent

UCVA=uncorrected visual acuity; Group 1=combined implantation; Group 2=bilateral multifocal implantation.

Table 3.
Subjective function scores in the 2 groups
  Group 1 Group 2 p-value
Patients' overall satisfaction Mean (± SD) 3.50±1.29 3.88±0.64 0.583
Halos No. of cases (%) 0/5 (0%) 3/10 (30%) 0.491
Glare No. of cases (%) 3/5 (60%) 6/10 (60%) 1.000
Complete spectacle independence No. (%) 2/5 (40%) 8/10 (80%) 0.067

Group 1=combined implantation; Group 2=bilateral multifocal implantation.

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