scholarly journals Visual Performance after Bilateral Implantation of a Four-Haptic Diffractive Toric Multifocal Intraocular Lens in High Myopes

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
John S. M. Chang ◽  
Vincent K. C. Chan ◽  
Jack C. M. Ng ◽  
Antony K. P. Law
Keyword(s):  
Contrast Sensitivity ◽  
Intraocular Lens ◽  
Case Series ◽  
Intraocular Lenses ◽  
Visual Performance ◽  
Multifocal Intraocular Lens ◽  
Multifocal Intraocular Lenses ◽  
Spatial Frequencies ◽  
High Satisfaction ◽  
Line Loss

Background. The vision with diffractive toric multifocal intraocular lenses after cataract surgery in long eyes has not been studied previously.Objectives. To report visual performance after bilateral implantation of a diffractive toric multifocal intraocular lens in high myopes.Methods. Prospective, observational case series to include patients with axial length of ≥26 mm and corneal astigmatism of >1 dioptre who underwent bilateral AT LISA 909M implantation. Postoperative examinations included photopic and mesopic distance, intermediate, and near visual acuity; photopic contrast sensitivity; visual symptoms (0–5); satisfaction (1–5); and spectacle independence rate.Results. Twenty-eight eyes (14 patients) were included. Postoperatively, mean photopic monocular uncorrected distance, intermediate, and near visual acuities (logMAR) were0.12±0.20(standard deviation),0.24±0.16, and0.29±0.21, respectively. Corresponding binocular values were-0.01±0.14,0.13±0.12, and0.20±0.19, respectively. One eye (4%) had one-line loss in vision. Under mesopic condition, intermediate vision and near vision decreased significantly (allP≤0.001). Contrast sensitivity at all spatial frequencies did not improve significantly under binocular condition (allP>0.05). Median scores for halos, night glare, starbursts, and satisfaction were 0.50, 0.00, 0.00, and 4.25, respectively. Ten patients (71%) reported complete spectacle independence.Conclusions. Bilateral implantation of the intraocular lens in high myopes appeared to be safe and achieved good visual performance and high satisfaction.

scholarly journals Visual Outcomes, Quality of Vision, and Quality of Life of Diffractive Multifocal Intraocular Lens Implantation after Myopic Laser In Situ Keratomileusis: A Prospective, Observational Case Series

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
John S. M. Chang ◽  
Jack C. M. Ng ◽  
Vincent K. C. Chan ◽  
Antony K. P. Law
Keyword(s):  
Quality Of Life ◽  
Contrast Sensitivity ◽  
Intraocular Lens ◽  
Case Series ◽  
Visual Performance ◽  
Laser In Situ Keratomileusis ◽  
Life Questionnaire ◽  
Multifocal Intraocular Lens

Purpose. To report visual performance and quality of life after implantation of a bifocal diffractive multifocal intraocular lens (MIOL) in postmyopic laser in situ keratomileusis (LASIK) patients.Methods. Prospective, observational case series. Patients with prior myopic LASIK who had implantation of Tecnis ZMA00/ZMB00 MIOL (Abbott Medical Optics) at Hong Kong Sanatorium and Hospital were included. Postoperative examinations included monocular and binocular distance, intermediate and near visual acuity (VA), and contrast sensitivity; visual symptoms (0–5); satisfaction (1–5); spectacle independence rate; and quality of life.Results. Twenty-three patients (27 eyes) were included. No intraoperative complications developed. Mean monocular uncorrected VA at distance, intermediate, and near were0.13±0.15(standard deviation),0.22±0.15, and0.16±0.15, respectively. Corresponding mean values for binocular uncorrected VA were0.00±0.10,0.08±0.13, and0.13±0.10, respectively. No eyes lost >1 line of corrected distance VA. Contrast sensitivity at different spatial frequencies between operated and unoperated eyes did not differ significantly (allP>0.05). Mean score for halos, night glare, starbursts, and satisfaction were1.46±1.62,1.85±1.69,0.78±1.31, and3.50±1.02, respectively. Eighteen patients (78%) reported complete spectacle independence. Mean composite score of the quality-of-life questionnaire was90.31±8.50out of 100.Conclusions. Implantation of the MIOL after myopic LASIK was safe and achieved good visual performance.

scholarly journals Analyzing the reasons for patients’ dissatisfaction with the results of multifocal intraocular lens implantation

2014 ◽  
Vol 95 (4) ◽  
pp. 515-519
Author(s):  
K S Ivonin
Keyword(s):  
Visual Acuity ◽  
Contrast Sensitivity ◽  
Intraocular Lens ◽  
Intraocular Lenses ◽  
Intraocular Lens Implantation ◽  
Multifocal Intraocular Lens ◽  
Multifocal Intraocular Lenses ◽  
Spatial Contrast Sensitivity ◽  
Lens Implantation ◽  
Light Side

Aim. To analyze the causes for patients’ dissatisfaction with the results of multifocal intraocular lens implantation. Methods. The research is based on the results of cataract surgeries in 220 patients (50 patients were implanted multifocal refractive intraocular «M-flex» lens, 40 - multifocal intraocular «Gradiol» lens, 64 - multifocal intraocular «Accord» lens, 66 - monofocal intraocular lens). Pre-and post-operative examination included visual acuity test (with and without correction to near, far and moderate distances), determination of the nearest point of clear vision, contrast sensitivity study using the «Zebra» software, stereo vision test, pupil diameter measuring, refractometry, keratometry, binocular vision color tests, patient questioning. Pre-operative evaluation was performed 1 day prior to surgery. Post-operative observation was carried out 1 week, 1, 3, 6 and 12 months after the surgery. Results. No statistically significant difference (p 0.05) in uncorrected visual acuity at different light intensity - 102 lux and 416 lux - was found between the groups with different types of multifocal intraocular lenses. In groups with multifocal intraocular lenses light side effects were observed in 46-52.5% of patients. However, there was no link between the light side effects and patients’ satisfaction with results of the surgery. Reduction of spatial contrast sensitivity parameters was registered in all groups of multifocal intraocular lenses patients compared to patients with monofocal intraocular lenses (p 0.05). According to the survey results, 92.5 to 94% of patients with multifocal intraocular lenses did not report decreased visual acuity on moderate distance. Conclusion. The most important reason for patients’ dissatisfaction with the results of the multifocal intraocular lenses implanting was the reduction of spatial-contrast sensitivity parameters. Bilateral multifocal intraocular lenses implanting improved the contrast ratio.

scholarly journals A comparative study on early vision quality after implantation of refractive segmental and diffractive multifocal intraocular lens

2020 ◽  
Vol 36 (7) ◽  
Author(s):  
Huifang Lian ◽  
Weisong Ma ◽  
Qiuhong Wei ◽  
Xiaoyong Yuan
Keyword(s):  
Patient Satisfaction ◽  
Contrast Sensitivity ◽  
Intraocular Lens ◽  
Visual Disturbance ◽  
Early Vision ◽  
Multifocal Intraocular Lens ◽  
Spatial Frequencies ◽  
High Order Aberration ◽  
Phacoemulsification Cataract Surgery

Objectives: To compare early subjective and objective vision quality of postoperative patients undergoing phacoemulsification cataract surgery combined with implantation of refractive segmental multifocal intraocular lens (MIOL) SBL-3 and apodized diffractive MIOL SN6AD1. Methods: As a prospective study, it enrolled 53 patients (53 eyes) to undergo phacoemulsification cataract surgery combined with MIOL implantation. According to differences in MIOL implanted, patients were divided into a SBL-3 group (25 eyes) and a SN6AD1 group (28 eyes). Ophthalmological evaluation included uncorrected (UDVA) and corrected (CDVA) distance visual acuities, uncorrected intermediate (UIVA) and near (UNVA) visual acuities, distance-corrected intermediate (DCIVA) and near (DCNVA)visual acuities and corrected near(CNVA) visual acuity, contrast sensitivity, modulation transfer function (MTF) and high order aberration (4 mm pupil diameter) at three months postoperatively. Moreover, a questionnaire survey was carried out to assess near spectacle independence, patient satisfaction and symptoms of visual disturbance. Results: At three months after surgery, UIVA and UNVA in the SBL-3 group are statistically significantly superior to those of the SN6AD1 group (P<0.05). There was statistical difference in contrast sensitivity at four spatial frequencies (3, 6, 12, 18cycles/degree) under mesopic conditions and mesopic conditions with glare (P<0.05). The total ocular high order aberration, coma and trefoil were statistically significantly larger in the SBL-3 group than in the SN6AD1 group with 4.0 mm pupil diameters (P<0.05). Statistical differences were found in the MTF at spatial frequencies of 5, 10 and 15 cycles/degree between the groups. There were no significant differences in spectacle independence, patient satisfaction and visual disturbance between the groups (P>0.05). Conclusions: Both the two multifocal intraocular lens provided an excellent level of quality of vision three months postoperatively. However, the application effect of SBL-3 MIOL is superior to that of SN6AD1 MIOL as far as intermediate vision, near vision and contrast sensitivity are concerned. doi: https://doi.org/10.12669/pjms.36.7.3364 How to cite this:Lian H, Ma W, Wei Q, Yuan X. A comparative study on early vision quality after implantation of refractive segmental and diffractive multifocal intraocular lens. Pak J Med Sci. 2020;36(7):---------. doi: https://doi.org/10.12669/pjms.36.7.3364 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

scholarly journals Visual performance in a flight simulator: multifocal intraocular lenses in pilots

2018 ◽  
Vol 3 (1) ◽  
pp. e000139
Author(s):  
Lee Lenton
Keyword(s):  
Visual Acuity ◽  
Contrast Sensitivity ◽  
Luminance Contrast ◽  
Intraocular Lenses ◽  
Visual Performance ◽  
Flight Simulator ◽  
Night Time ◽  
Multifocal Intraocular Lenses ◽  
Low Luminance ◽  
Visual Tasks

ObjectiveTo compare the performance of adults with multifocal intraocular lenses (MIOLs) in a realistic flight simulator with age-matched adults with monofocal intraocular lenses (IOLs).Methods and AnalysisTwenty-five adults ≥60 years with either bilateral MIOL or bilateral IOL implantation were enrolled. Visual function tests included visual acuity and contrast sensitivity under photopic and mesopic conditions, defocus curves and low luminance contrast sensitivity tests in the presence and absence of glare (Mesotest II), as well as halo size measurement using an app-based halometer (Aston halometer). Flight simulator performance was assessed in a fixed-based flight simulator (PS4.5). Subjects completed three simulated landing runs in both daytime and night-time conditions in a randomised order, including a series of visual tasks critical for safety.ResultsOf the 25 age-matched enrolled subjects, 13 had bilateral MIOLs and 12 had bilateral IOLs. Photopic and mesopic visual acuity or contrast sensitivity were not significantly different between the groups. Larger halo areas were seen in the MIOL group and Mesotest values were significantly worse in the MIOL group, both with and without glare. The defocus curves showed better uncorrected visual acuity at intermediate and near distances for the MIOL group. There were no significant differences regarding performance of the vision-related flight simulator tasks between both groups.ConclusionsThe performance of visually related flight simulator tasks was not significantly impaired in older adults with MIOLs compared with age-matched adults with monofocal IOLs. These findings suggest that MIOLs do not impair visual performance in a flight simulator.

scholarly journals Visual performance of four types of diffractive multifocal intraocular lenses and a review of articles

2021 ◽  
Vol 14 (3) ◽  
pp. 356-365
Author(s):  
Farideh Doroodgar ◽  
◽  
Azad Sanginabadi ◽  
Farid Karimian ◽  
Sana Niazi ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Contrast Sensitivity ◽  
Intraocular Lenses ◽  
Multifocal Intraocular Lenses ◽  
Spatial Frequencies ◽  
Signed Rank ◽  
Pubmed Database ◽  
Significant Difference ◽  
The One ◽  
Post Hoc

AIM: To compare the clinical outcomes of a variety of multifocal intraocular lenses (MIOLs) in patients diagnosed with presbyopia or cataracts. METHODS: This clinical trial study included 141 patients (282 eyes) with different MIOLs implantation. The Symfony (60 eyes), the ReSTOR (100 eyes), the AT LISAtri (60 eyes), and the PanOptix (62 eyes) intraocular lenses were evaluated in this prospective interventional study. The near, intermediate, and distant visual acuities, contrast sensitivity, and defocus curve were measured as valid criteria. To statistically analyze the results, we used the Statistical Package for Social Science software, the non-parametric Wilcoxon signed-rank t, the one-way analysis of variance and the Tukey's post-hoc test in our analysis. Moreover, we conducted a detailed literature search on the PubMed database in English about MIOLs, in total 59 studies were included in this review article. RESULTS: The four approaches did not show any significant difference in the best-corrected distance visual acuity (P>0.05). The defocus curves at the contrast of 100% showed that trifocal IOLs had better intermediate performance than the bifocal IOL (P<0.05). There were no statistically significant differences between AT LISAtri and PanOptix lenses for visual acuity at all distances. The eyes with PanOptix, Symfony, and AT LISAtri IOL showed better contrast sensitivity than those ReSTOR at spatial frequencies of 1, 3, and 6 cpd in photopic and mesopic conditions (P<0.001). CONCLUSION: All four groups of the multifocal lenses were satisfying in terms of distance and near vision. Also, the group of trifocal lenses led to satisfactory outcomes in intermediate vision, without degradation in quality of vision.

scholarly journals Comparison of visual performance between monofocal and multifocal intraocular lenses of the same material and basic design

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hirotaka Tanabe ◽  
Hitoshi Tabuchi ◽  
Tomohiro Shojo ◽  
Tomofusa Yamauchi ◽  
Kosuke Takase
Keyword(s):  
Visual Acuity ◽  
Contrast Sensitivity ◽  
Wald Test ◽  
Intraocular Lenses ◽  
Visual Performance ◽  
Basic Design ◽  
Night Time ◽  
Multifocal Iol ◽  
Multifocal Intraocular Lenses ◽  
Near Visual Acuity

Abstract To compare the visual performance of a monofocal intraocular lens (IOL) (ZCB00) and a multifocal IOL (ZMB00) of the same material and basic design, we evaluated postoperative parameters at 10 weeks after the last surgery in cataract patients who underwent bilateral ZCB00 or ZMB00 implantation from December 13, 2010, to July 29, 2019, with the right and left lenses implanted within 3 months of each other. The study enrolled 2,230 eyes of 1,115 patients. The monofocal group comprised 904 eyes of 452 patients (72.3 ± 6.8 years; females/males, 268/184), and the multifocal group comprised 1,326 eyes of 663 patients (67.0 ± 7.8 years; females/males, 518/145). Contrast sensitivity (4.0/2.5/1.6/1.0/0.7 degrees), contrast sensitivity with glare (1.6/1.0/0.7 degrees), and the VFQ-25 score for driving at night were significantly better in the monofocal group (p < 0.00068, Wald test). Uncorrected intermediate/near visual acuity and near spectacle independence were significantly better in the multifocal group (p < 0.00068, Wald test). The two IOL groups had different characteristics in terms of contrast sensitivity, night-time driving, uncorrected intermediate/near visual acuity and near spectacle independence.

scholarly journals Comparison of visual and optical quality of monofocal versus multifocal intraocular lenses

2019 ◽  
Vol 30 (2) ◽  
pp. 299-306 ◽  
Author(s):  
Irene Altemir-Gomez ◽  
Maria S Millan ◽  
Fidel Vega ◽  
Francisco Bartol-Puyal ◽  
Galadriel Gimenez-Calvo ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Transfer Function ◽  
Contrast Sensitivity ◽  
Intraocular Lens ◽  
Modulation Transfer Function ◽  
Area Under The Curve ◽  
Optical Quality ◽  
Intraocular Lenses ◽  
Modulation Transfer ◽  
Multifocal Intraocular Lenses

Objective: To compare visual quality in patients implanted with Tecnis® monofocal (ZCB00) and multifocal (ZMB00) intraocular lenses taking into account their optical quality measured in vitro with an eye model. Methods: In total, 122 patients participated in this study: 44 implanted with monofocal and 78 with multifocal intraocular lenses. Measurements of visual acuity and contrast sensitivity were performed. The optical quality of the intraocular lenses was evaluated in three image planes (distance, intermediate and near) using an eye model on a test bench. The metric considered was the area under the curve of the modulation transfer function. Results: Optical quality at the far focus of the monofocal intraocular lens (area under the curve of the modulation transfer function = 66.97) was considerably better than that with the multifocal lens (area under the curve of the modulation transfer function = 32.54). However, no significant differences were observed between groups at the distance-corrected visual acuity. Distance-corrected near vision was better in the multifocal (0.15 ± 0.20 logMAR) than that in the monofocal group (0.43 ± 0.21 logMAR, p < 0.001), which correlated with the better optical quality at near reached by the multifocal intraocular lens (area under the curve of the modulation transfer function = 29.11) in comparison with the monofocal intraocular lens (area under the curve of the modulation transfer function = 5.0). In intermediate vision, visual acuity was 0.28 ± 0.16 logMAR (multifocal) and 0.36 ± 0.14 logMAR (monofocal) with p = 0.014, also in good agreement with the values measured in the optical quality (area under the curve of the modulation transfer function = 10.69 (multifocal) and 8.86 (monofocal)). The contrast sensitivity was similar in almost all frequencies. Pelli–Robson was slightly better in the monofocal (1.73) than in the multifocal group (1.64; p = 0.023). Conclusion: Patients implanted with multifocal ZMB00 achieved a distance visual acuity similar to those implanted with monofocal ZCB00, but showed significantly better intermediate and near visual acuity. A correlation was found between intraocular lenses’ optical quality and patients’ visual acuity. Contrast sensitivity was very similar between the multifocal and monofocal groups.

Pupil dependence assessment with multifocal intraocular lenses through visual acuity and contrast sensitivity defocus curves

2020 ◽  
pp. 112067212094020
Author(s):  
Joaquín Fernández ◽  
Manuel Rodríguez-Vallejo ◽  
Javier Martínez ◽  
Noemi Burguera ◽  
David P Piñero
Keyword(s):  
Visual Acuity ◽  
Contrast Sensitivity ◽  
Pupil Size ◽  
Statistical Power ◽  
Intraocular Lenses ◽  
Visual Performance ◽  
Performance Measurements ◽  
Multifocal Intraocular Lenses ◽  
Group A ◽  
Group B

Purpose: To identify the most sensitive visual performance metric for evaluating the pupil-dependency of a multifocal intraocular lens (MIOL) and to determine the pupil measurement method most correlated with such metric. Methods: Twenty-seven right eyes implanted with a MIOL were included in the analysis. Three pupil size measurements were obtained preoperatively and at 1 month after surgery with the Keratograph 5M system: photopic (PP), mesopic (MP), and the average from both (AP). Pupil was also measured with a rule (RP) under the same light conditions of postoperative visual performance measurements that included, corrected visual acuities (VA) at three distances (far, 67 cm and 40 cm), visual acuity (VADC) and contrast sensitivity defocus curves for optotype sizes of 0.3 logMAR (CSDC3) and 0.7 logMAR (CSDC7). Differences in visual performance were also analyzed for eyes with RP > 3 mm (Group A) and RP ⩽ 3 mm (Group B). Results: PP diameter decreased after surgery by 16% ( p = 0.001), whereas MP ( p = 0.013) and AP ( p = 0.008) decreased by 10%. The best agreement with RP was obtained for AP. Group B showed a trend to better performance than Group A for all the included metrics ( p > 0.05). From the three types of defocus curves, CSDC3 obtained generally highest statistical power for testing differences between groups. The strongest statistically significant correlations between pupil size and CSDC3 were obtained for RP and AP. Conclusion: The CSDC3 was the most sensitive metric to detect MIOL pupil-dependency. PR and AP were more correlated with CSDC3 than PP and MP.

Sign in / Sign up

Export Citation Format

Share Document