Journal List > J Korean Ophthalmol Soc > v.58(1) > 1010727

Lee, Kim, Yu, Lee, Lee, and Park: Intraindividual Comparison of Visual Outcomes between Blue Light-filtering and Ultraviolet Light-filtering Intraocular Lens

Abstract

Purpose

To compare the clinical results of short-term visual acuity and quality of vision after implantation of a yellow-tinted blue light-filtering intraocular lens (IOL) (Acrysof IQ® SN60WF) and an clear ultraviolet (UV) light filtering IOL (enVista TM MX60) in the same patient.

Methods

44 patients with bilateral cataract received an SN60WF in one eye and an MX60 in the other eye. All eyes were eval-uated for refraction power and uncorrected visual acuity (UCVA) at preoperative and 1, 3 months postoperatively. At post-operative 3 months, corrected visual acuity, quality of vision (OQASⅡ®), contrast sensitivity (CGT 2000®) and visual field (Humphrey Field Analyzer®), and subjective patients' response to the degree of brightness were evaluated. Furthermore, glisten-ing degree, intraocular stability, and posterior capsular opacification were examined.

Results

There were no significant differences in average refractive power or UCVA at 1 and 3 months ( p > 0.05) between the two groups. At 3 months after cataract surgery, the quality of vision according to OQASⅡ®, the contrast sensitivity according to CGT 2000® with the glare either on or off, and visual field; showed no difference between the two groups ( p > 0.05). Both IOLs had no glistening and posterior capsular opacity. The patients' response to the degree of brightness shows that MX60 (48.3%) has a higher degree of satisfaction.

Conclusions

Yellow-tinted blue light-filtering IOL and clear UV light-filtering IOL had no difference in short-term visual acuity and quality of vision. Subjective brightness perception, however, was better with clear UV light-filtering IOL.

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Table 1.
Patient demographics
Intraocular lens type
p-value*
enVista TM MX60 AcrySof IQ® SN60WF
Number of eyes 44 44
OD:OS 24:20 20:24
Sex (male:female) 14:30 14:30
Mean age (years) 70.0 ± 8.6 70.0 ± 8.6
Pre OP S.E. (D) 0.55 ± 1.34 0.20 ± 1.94 0.370
UCVA (Snellen) 0.42 ± 0.17 0.46 ± 0.19 0.314
Axial length (mm) 23.23 ± 0.70 23.22 ± 0.66 0.954
Intraocular lens power (D) 21.30 ± 1.80 21.16 ± 1.70 0.716
Foveal thickness measured by OCT (μ m) 228.65 ± 24.73 229.29 ± 18.22 0.916

Values are presented as mean ± standard deviation unless otherwise indicated. Pre OP = preoperative; S.E. = spherical equivalent; D = diopter; UCVA = uncorrected distant visual acuity; OCT = optical coherence tomography.

* p-value: paired sample t-test.

Table 2.
Refractive and visual outcomes at postoperative 1 month and 3 months
Intraocular lens type
p-value*
enVista TM MX60 AcrySof IQ® SN60WF
Postop 1 month UCVA 0.79 ± 0.17 0.77 ± 0.15 0.427
S.E. (D) 0.00 ± 0.49 0.09 ± 0.45 0.365
Postop 3 months UCVA 0.80 ± 0.16 0.78 ± 0.17 0.696
BCVA 0.96 ± 0.08 0.94 ± 0.09 0.434
S.E. (D) -0.02 ± 0.53 0.07 ± 0.41 0.372

Values are presented as mean ± standard deviation unless otherwise indicated. Postop = postoperative; UCVA= uncorrected visual acuity (Snellen); S.E. = spherical equivalent; D = diopter; BCVA= best corrected visu-al acuity.

* p-value: paired sample t-test.

Table 3.
Optical quality parameters measured by optical quality analysis system II® (OQAS II®) at postoperative 3 months
Intraocular lens type
p-value*
enVista TM MX60 AcrySof IQ® SN60WF
OSI 1.28 ± 0.84 1.35 ± 1.04 0.727
MTF cut-off value 32.15 ± 9.08 31.98 ± 10.68 0.936
Strehl ratio 0.17 ± 0.05 0.16 ± 0.05 0.507
VA100 1.08 ± 0.31 1.07 ± 0.36 0.322
VA20 0.75 ± 0.25 0.74 ± 0.28 0.869
VA9 0.44 ± 0.15 0.42 ± 0.15 0.539

Values are presented as mean ± standard deviation unless otherwise indicated. OSI = objective scatter index; MTF = modulation transfer function; VA100 = optical quality of the eye for 100% contrast conditions; VA20 = optical quality of the eye for 20% contrast conditions; VA9 = optical quality of the eye for 9% contrast conditions.

* p-value: paired sample t-test.

Table 4.
Visual field parameters measured by Humphrey field analyzer®: 24-2 SITA-Fast at postoperative 3 months
Intraocular lens type
p-value*
enVista TM MX60 AcrySof IQ® SN60WF
MD -1.69 ± 0.89 -1.67 ± 1.08 0.945
PSD 2.16 ± 0.86 2.41 ± 1.29 0.458
Fovea threshold 35.43 ± 1.96 35.09 ± 2.07 0.596

Values are presented as mean ± standard deviation unless otherwise indicated. MD = mean deviation; PSD = pattern standard deviation.

* p value: paired sample t-test.

Figure 1.
Blue light-filtering intraocular lens and ultraviolet (UV) light-filtering intraocular lens. The left lens is enVista TM MX60 and the right lens is AcrySof IQ® SN60WF.
jkos-58-34f1.tif
Figure 2.
Contrast sensitivity test. The contrast sensitivity measurement using CGT-2000® was compared at (A) day, (B) twilight, and (C) night. Superior column tested when glare off, inferior column tested when glare on ( p < 0.05).
jkos-58-34f2.tif
Figure 3.
Questionnaire about brightness perception at post-operative 3 months. 29 out of 44 (66%) patients answered the questionnaire.
jkos-58-34f3.tif
Figure 4.
Slit lamp examination at postoperative 3 months. Posterior capsular opacity and glistening did not develop in the (A) enVista TM MX60 (B) AcrySof IQ® SN60WF.
jkos-58-34f4.tif
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