Visual Function and Subjective Quality of Life in Chinese Cataract Patients after Implantation with Aspheric Intraocular Lenses

Purpose. To evaluate and compare the objective and subjective visual function after implantation of 2 aspheric intraocular lenses (IOLs) in Chinese cataract patients. Methods. Forty-one eyes of 28 patients with cataract were randomly assigned to receive either the MC X11 ASP IOL or the AcrySof IQ IOL. Three months postoperatively, best-corrected visual acuity (BCVA), contrast sensitivity, wavefront aberrations, and subjective visual quality were measured. The degree of posterior capsule opacification (PCO) was recorded at last follow-up. Results. Postoperative mean monocular BCVA was 0.05±0.13 logMAR in the MC X11 group and 0.05±0.08 logMAR in the IQ group. There was no significant difference in visual acuity, contrast sensitivity, subjective visual quality, and degree of PCO between the 2 groups. For a 6-mm pupil diameter, the mean spherical aberration (Z40) was 0.075±0.076 μm in the MC X11 group and 0.056±0.111 μm in the IQ group. However, 45.5% and 57.9% of the eyes in the MC X11 and IQ groups had values >0.10 μm, respectively. The mean RMS values of the high-order aberrations were similar between the 2 groups except the higher fifth- and sixth-order aberrations, which were significantly higher in the MC X11 group. Conclusions. Both IOLs provided similar and good visual outcomes. However, the data suggest that the amount of negative spherical aberration generated by current available aspheric IOLs might not be optimal for Chinese eyes.

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Aspheric Intraocular Lenses Implantation for Cataract Patients with Extreme Myopia

ISRN Ophthalmology ◽

10.1155/2014/403432 ◽

2014 ◽

Vol 2014 ◽

pp. 1-6 ◽

Cited By ~ 3

Author(s):

Yanwen Fang ◽

Yi Lu ◽

Aizhu Miao ◽

Yi Luo

Keyword(s):

Contrast Sensitivity ◽

Visual Quality ◽

Intraocular Lenses ◽

Wavefront Aberrations ◽

Spatial Frequencies ◽

Aspheric Iol ◽

Significant Difference ◽

Composite Scores ◽

Cataract Patients

Objective. To evaluate the postoperative visual quality of cataract patients with extreme myopia after implantation of aspheric intraocular lenses (IOLs). Methods. Thirty-three eyes were enrolled in this prospectivestudy. Eighteen eyes with an axial length longer than 28 mm were included in the extreme myopia group, and the other 15 eyes were included in the nonextreme myopia group. Phacoemulsification and aspheric IOL implantation were performed. Six months after cataract surgery, best-corrected visual acuity (BCVA), contrast sensitivity, and wavefront aberrations were measured, and subjective visual quality was assessed. Results. The BCVA improved significantly after surgery for both groups, and patients in the nonextreme myopia group achieved better postoperative BCVA due to better retinal status of the eyes. The evaluation of contrast sensitivity without glare was the same in both groups, whereas patients in the nonextreme myopia group performed better at intermediate spatial frequencies under glare conditions. The two groups did not show a significant difference in high-order aberrations. With regard to subjective visual quality, the composite scores of both groups did not differ significantly. Conclusions. Aspheric IOLs provided good visual outcomes in cataract patients with extreme myopia. These patients should undergo careful evaluation to determine the maculopathy severity level before surgery.

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Functional visual acuity after implantation of diffractive extended depth-of-focus intraocular lenses using an echelett optics

BMC Ophthalmology ◽

10.1186/s12886-021-02189-7 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Toshihiro Sakisaka ◽

Keiichiro Minami ◽

Keita Takada ◽

Yosai Mori ◽

Kazunori Miyata

Keyword(s):

Visual Acuity ◽

Contrast Sensitivity ◽

Visual Function ◽

Case Series ◽

Intraocular Lenses ◽

Depth Of Focus ◽

Mean Response Time ◽

Extended Depth Of Focus ◽

Functional Visual Acuity ◽

The Mean

Abstract Background The prospective comparative case series aimed to evaluate all-distance visual acuity, contrast sensitivity, and functional visual acuity (FVA) of eyes with diffractive extended depth-of-focus (EDOF) intraocular lenses (IOLs) using an echelett optics and monofocal IOLs with the same platform. Methods Diffractive EDOF and monofocal IOLs were implanted in 27 eyes of 27 patients each. At 3 months after implantation, all-distance visual acuities at distances of 0.3, 0.5, 0.7, 1, 2, 3, and 5 m were measured under distance-corrected. Static visual function was also examined using photopic contrast sensitivity and area under the logarithmic contrast sensitivity function (AULCSF). Dynamic visual function was examined with FVA, and mean FVA value, visual maintenance ratio (VMR), mean response time, and number of blinks were evaluated. These outcomes were compared between the two IOLs. Results The mean distance-corrected visual acuities were better at distances of 0.7 m or nearer in eyes with EDOF IOLs. There was no difference in the contrast sensitivities (P > 0.22). In the FVA results, no difference was found in mean FVA and VMR (P > 0.68). Conclusion The static and dynamic evaluations of postoperative visual functions demonstrated that the visual function of eyes with EDOF IOLs under photopic and distance-corrected conditions was comparable to eyes with monofocal IOLs.

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Comparison of clinical effects of two brands of toric intraocular lens

10.21203/rs.3.rs-18803/v1 ◽

2020 ◽

Author(s):

Yinan Liu ◽

Qianru Wu ◽

Hongyuan Cai ◽

Xiaoyong Chen

Keyword(s):

Visual Acuity ◽

Contrast Sensitivity ◽

Scale Score ◽

Intraocular Lens ◽

Visual Quality ◽

Corneal Astigmatism ◽

Clinical Effects ◽

Toric Intraocular Lens ◽

Significant Difference ◽

The Mean

Abstract Background This study aimed to compare the clinical effects of two brands of toric intraocular lens used in surgical correction of cataract with corneal astigmatism. Methods 35 patients (50 eyes) with corneal astigmatism who underwent ophthalmic surgery from April 2019 to July 2019 were retrospectively analyzed. Among them, 25 eyes of 20 patients were implanted with Rayner 623T, while 25 eyes of 15 patients with Alcon AcrySof Toric intraocular lens (IOL). Three months after surgery, the uncorrected distance visual acuity (UCDVA), best corrected distance visual acuity (BCDVA), residual astigmatism, rotational degree of intraocular lens, contrast sensitivity, objective visual quality and the National Eye Institute 25-Item Visual Function Questionnaire (NEI VFQ-25) scale score were compared. Results The mean postoperative UCDVA (logMAR) and BCDVA (logMAR) in the Rayner group were 0.17 ± 0.20 and 0.08 ± 0.15, respectively (P > 0.05), while those in the Alcon group were 0.21 ± 0.16 and 0.10 ± 0.11, respectively (P > 0.05). The mean residual astigmatism in the Rayner group was (0.69±0.40) while that in the Alcon group was (0.62±0.49), (P >0.05). There was no statistically significant difference between the two groups in IOL rotational stability, contrast sensitivity and objective visual quality (P > 0.05). The NEI VFQ-25 scale score was 85.16±5.91 in the Rayner group while that was 82.08±6.16 in the Alcon group, (P > 0.05). Conclusions The two brands of toric intraocular lens- Rayner 623T and Alcon AcrySof Toric showed no significant difference in their clinical effects.

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Effects of spectacles and telescopes on visual function in students with oculocutaneous albinism

African Health Sciences ◽

10.4314/ahs.v20i2.28 ◽

2020 ◽

Vol 20 (2) ◽

pp. 758-767

Author(s):

Siddeeqa Jhetam ◽

Khathutshelo P Mashige

Keyword(s):

Visual Acuity ◽

Contrast Sensitivity ◽

Reading Rate ◽

Oculocutaneous Albinism ◽

Eye Care ◽

Significant Difference ◽

Observational Study Design ◽

The Mean ◽

Better Than ◽

Spectacle Correction

Purpose: To investigate the effects of spectacle and telescope corrections on visual acuity (VA), contrast sensitivity (CS) and reading rates (RR) in students with oculocutaneous albinism (OCA). Methods: An observational study design was conducted on 81 students with OCA. Distance and near VA, CS and RR were measured without correction, with spectacle correction and with a combination of spectacle correction and telescopes. Results: The mean distance and near VA values with a combination of spectacle correction and telescopes were significantly better than those without correction and with spectacle correction alone (p = 0.01). Mean CS values achieved with spectacles alone were significantly better than those obtained with a combination of spectacles and telescopes (p = 0.01). There was no significant difference between logCS values obtained without correction compared to those obtained with a combination of spectacle correction and telescopes. There were no significant differences between RR values obtained with a combination of spectacles and telescopes and those without and with spectacle correction alone (all p > 0.05). Conclusion: This article provides valuable information to eye care practitioners on the effects of spectacles and telescopes on visual acuity, contrast sensitivity and reading rate in students with OCA. Keywords: Oculocutaneous albinism; visual acuity; telescope; contrast sensitivity; reading rate.

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Prospective analysis of visual function changes in patients with dermatochalasis after upper eyelid blepharoplasty

European Journal of Ophthalmology ◽

10.1177/1120672119857501 ◽

2019 ◽

Vol 30 (5) ◽

pp. 978-984

Author(s):

Meryem Altin Ekin ◽

Seyda Karadeniz Ugurlu

Keyword(s):

Visual Acuity ◽

Contrast Sensitivity ◽

Visual Function ◽

Spherical Aberration ◽

Higher Order ◽

Rank Test ◽

Higher Order Aberrations ◽

Upper Eyelid ◽

Spatial Frequencies ◽

The Difference

Objective: To evaluate the changes of visual acuity, contrast sensitivity, astigmatism, and higher order aberrations after blepharoplasty in patients with dermatochalasis. Methods: Two hundred six eyelids of 103 patients with dermatochalasis were prospectively studied. Visual acuity, contrast sensitivity, corneal topography, astigmatism degree, and higher order aberrations were examined and recorded before and at 1 month after upper eyelid blepharoplasty. Change in contrast sensitivity and astigmatism values were determined according to margin reflex distance of patients, which were classified into three following groups: <2 mm, 2–3 mm, and ⩾ 4 mm. A Wilcoxon signed rank test was performed to compare the difference. Results: No significant differences were observed for visual acuity (p = 0.157). The contrast sensitivity of patients significantly increased at all spatial frequencies both under glare and nonglare conditions (p < 0.05). The mean refractive astigmatism significantly decreased from ‒1.01 ± 1.3 to ‒0.79 ± 0.71, postoperatively (p = 0.029). In patients with marginal reflex distance < 2 mm, mean contrast sensitivity was increased (p < 0.001) and mean astigmatism was decreased significantly (p < 0.001) compared with those with ⩾ 2 mm. Higher order aberrations decreased significantly from 0.62 ± 0.41 µm to 0.55 ± 0.38 µm (p = 0.038) after blepharoplasty. Root mean square of the vertical trefoil (p = 0.038), vertical coma (p = 0.002), horizontal trefoil (p = 0.027), third-order aberration (p = 0.005), secondary vertical stigmatism (p = 0.001), spherical aberration (p = 0.023), secondary horizontal astigmatism (p = 0.002), fourth-order aberration (p = 0.024), vertical pentafoil (p = 0.015), secondary horizontal coma (p = 0.035), secondary horizontal trefoil (p = 0.030), and horizontal pentafoil (p = 0.048) were decreased significantly. Conclusion: Upper eyelid blepharoplasty in patients with dermatochalasis has a significant improvement in visual function in terms of contrast sensitivity, astigmatism, and higher order aberrations.

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

International Journal of Ophthalmology ◽

10.18240/ijo.2021.03.04 ◽

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.

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Influence of Angle Alpha on Visual Quality after Implantation of Extended Depth of Focus Intraocular Lenses

10.21203/rs.3.rs-257390/v1 ◽

2021 ◽

Author(s):

Miaomiao Qin ◽

Min Ji ◽

Tianqiu Zhou ◽

Yurong Yuan ◽

Jiawei Luo ◽

...

Keyword(s):

Visual Acuity ◽

Spherical Aberration ◽

Visual Quality ◽

Intraocular Lenses ◽

Patient Questionnaire ◽

Modulation Transfer ◽

Depth Of Focus ◽

Extended Depth Of Focus ◽

Postoperative Changes ◽

Angle Alpha

Abstract Background: To assess postoperative changes in angle alpha, and to evaluate the postoperative visual quality of patients with different angle alpha values after implantation of extended depth of focus (EDOF) intraocular lenses (IOLs).Methods: Seventy-nine eyes of 79 patients who had phacoemulsification with EDOF IOLs implantation were enrolled. A cut-off value of 0.3 mm, 0.4 mm, and 0.5 mm in preoperative angle alpha was chosen to divide eyes into groups. Distance, intermediate, and near visual acuities, modulation transfer function (MTF), and aberrations were recorded during a 6-month follow-up. A patient questionnaire was completed. Results: There were no significant differences in angle alpha postoperatively compared to preoperatively. No significant differences were found in visual acuity and MTF between all groups. With 5mm pupil diameter, there were significant differences of higher-order aberrations and spherical aberration in ocular aberration and internal aberration between angle alpha＜0.4 mm and angle alpha≥ 0.4 mm. Additionally, significant differences of coma were also added in cut-off value of 0.5 mm. When the value of angle alpha is 0.4 mm or higher, there were significant differences in the score of halos and glare.Conclusions: Angle alpha did not affect visual acuity, but the value of 0.4 mm or higher in angle alpha affected the visual quality under scotopic conditions and occurrence of halos and glare. For patients with 0.4 mm or higher in angle alpha, the decision to implant a EDOF IOL should be carefully considered.

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Comparative Analysis of a New Hybrid EDOF-Multifocal Diffractive Intraocular Lens with a Trifocal Diffractive Intraocular Lens

European Journal of Ophthalmology ◽

10.1177/11206721211067643 ◽

2021 ◽

pp. 112067212110676

Author(s):

Cem Ozturkmen ◽

Cem Kesim ◽

Pinar Gunel Karadeniz ◽

Afsun Sahin

Keyword(s):

Visual Acuity ◽

Intraocular Lens ◽

Visual Quality ◽

Visual Performance ◽

Significant Difference ◽

Defocus Curve ◽

Visual Quality Of Life ◽

Cataract Patients ◽

Diffractive Iol

Purpose To compare visual acuity, defocus curve and visual quality of life performances of a new hybrid refractive-diffractive intraocular lens (IOL) and a trifocal diffractive IOL. Methods Patients who underwent cataract surgery with bilateral implantation of ZFR00V or TFNT00 IOLs were enrolled in this study. The main outcomes were defined as uncorrected distant, intermediate and near visual acuities (UDVA, UIVA and UNVA, respectively), defocus curve and VF-14 questionnaire aimed for visual performance. Results Fifty patients, of whom 30 had bilateral ZFR00V implantation, were enrolled in the study. Patients with ZFR00V had significantly better UIVA than patients with TFNT00 (0.05 ± 0.03 vs. 0.07 ± 0.04 logMAR, P = 0.02). Defocus curve showed significantly higher visual acuity in intermediate range for ZFR00V IOL between −1.00 and −1.50 dioptres (all P < 0.05). All patients had good visual performance with mean VF-14 scores above 3 points with no significant difference between two IOL models. Spectacle independence was 100% for both distant and near vision in both group of patients. Conclusion Bilateral implantation of ZFR00V in cataract patients shows better intermediate visual acuity scores and similar daily visual performance when compared with trifocal TFNT00 IOL.

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Photopic and Mesopic Performance of 2 Different Trifocal Diffractive Intraocular Lenses

European Journal of Ophthalmology ◽

10.5301/ejo.5000814 ◽

2016 ◽

Vol 27 (1) ◽

pp. 26-30 ◽

Cited By ~ 9

Author(s):

Jose M. Martinez-de-la-Casa ◽

Jesús Carballo-Alvarez ◽

Javier Garcia-Bella ◽

Jose M. Vazquez-Molini ◽

Laura Morales ◽

...

Keyword(s):

Visual Acuity ◽

Contrast Sensitivity ◽

Visual Quality ◽

Intraocular Lenses ◽

High Contrast ◽

Distance Visual Acuity ◽

Uncorrected Distance Visual Acuity ◽

Corrected Distance Visual Acuity ◽

Study Test ◽

Distance Correction

Purpose To assess photopic and mesopic vision in patients implanted with 2 different trifocal intraocular lenses (IOLs). Methods Fifty patients with cataract in both eyes had surgery with bilateral implantation of a trifocal FineVision (FV, n = 25) or AT LISA tri 839MP (LisaTri, n = 25) IOL. Three months after surgery, high-contrast photopic uncorrected distance visual acuity and corrected distance visual acuity (CDVA) were determined using the Early Treatment Diabetic Retinopathy Study test. Intermediate (65 cm) and near (40 cm) visual acuity were also measured, both with best distance correction (DCIVA and DCNVA, respectively). The CSV1000 test chart was used for binocular and monocular contrast sensitivity. Defocus curves were constructed under photopic and mesopic conditions. Results Mean patient age was 68.4 ± 5.5 years (FV) and 67.3 ± 5.6 years (LisaTri) (p = 0.540). No differences were found in terms of visual acuity between the groups. The CDVA, DCIVA, and DCNVA were 0.05 ± 0.06, 0.25 ± 0.10, and 0.13 ± 0.10 logMAR for FV and -0.04 ± 0.11, 0.32 ± 0.09, and 0.12 ± 0.11 logMAR for LisaTri, respectively (p = 0.09, p = 0.08, and p = 0.12). Photopic and mesopic defocus curves were comparable between the 2 IOL groups (p>0.05). Mesopic values were significantly worse than photopic in both groups for all the measured values (p<0.001). No differences in contrast sensitivity were observed between the 2 IOL groups (p>0.05). Conclusions Both trifocal diffractive IOLs provided good visual quality with a statistically significant decrease in mesopic conditions.

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Toric phakic IOLs in keratoconus—evaluation of preoperative parameters on the outcome of phakic anterior chamber lens implantation in patients with keratoconus

Graefe s Archive for Clinical and Experimental Ophthalmology ◽

10.1007/s00417-020-05041-8 ◽

2021 ◽

Author(s):

Isaak R. Fischinger ◽

Jascha Wendelstein ◽

Kristin Tetz ◽

Matthias Bolz ◽

Manfred R. Tetz

Keyword(s):

Visual Acuity ◽

Anterior Chamber ◽

Intraocular Lenses ◽

Distance Visual Acuity ◽

Uncorrected Distance Visual Acuity ◽

Significant Difference ◽

Corrected Distance Visual Acuity ◽

Lens Implantation ◽

Efficacy Index ◽

The Mean

Abstract Purpose To evaluate the influence of the type of the keratectasia and preoperative keratometry readings on the efficacy of implantation of iris-fixated phakic anterior chamber intraocular lenses (pIOL) in patients with keratoconus. Methods In this retrospective study, iris-fixated pIOLs (Artisan/Artiflex (Ophtec®), Verisyse/Veriflex (AMO®)) were implanted in 38 eyes of 22 patients with stable keratoconus. Thirty-six eyes underwent corneal crosslinking (CXL) prior to the lens implantation. The refractive outcome was evaluated 6 weeks postoperatively and the influence of preoperative refraction and topo- and tomographical factors were analyzed. Results The mean postoperative uncorrected distance visual acuity (UDVApost) was 0.25 ± 0.15 logMAR and was not statistically different from the mean preoperative corrected distance visual acuity (CDVApre), which was 0.24 ± 0.13 logMAR. Twenty-seven eyes (71%) reached UDVApost/CDVApre ≥ 1 (efficacy index), whereas patients with PMD-like ectasia (n = 14) showed significantly (p = 0.003) higher efficacy index (100%) than patients diagnosed with keratoconus (n = 24) (54%). Higher eccentricity of the maximum posterior elevation showed a significant beneficial influence on the efficacy index (p = 0.021). Furthermore, a higher Amsler-Krumeich stage and preoperative MAE were correlated with a worse UDVApost. The mean absolute spherical equivalent was significantly decreased from 5.71 ± 4.96 D to 1.25 ± 1.20 D (p < 0.001). No significant difference was found in endothelial cell count. Conclusion The results indicate that the implantation of phakic iris-fixated anterior chamber IOLs is a reasonable refractive option for patients with keratoconus. Keratoconus patients with a pellucidal marginal degeneration (PMD)-like appearance ectasia seem to benefit most from such procedures.

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