scholarly journals Comparison of the Clinical Performance of Refractive Rotationally Asymmetric Multifocal IOLs with Other Types of IOLs: A Meta-Analysis

2018 ◽  
Vol 2018 ◽  
pp. 1-13
Author(s):  
Zequan Xu ◽  
Wenzhe Li ◽  
Lianqun Wu ◽  
Shuang Xue ◽  
Xu Chen ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Clinical Performance ◽  
Meta Analysis ◽  
Higher Order ◽  
Controlled Trials ◽  
Strehl Ratio ◽  
Higher Order Aberrations ◽  
Distance Visual Acuity ◽  
Uncorrected Distance Visual Acuity ◽  
Near Visual Acuity

Objective. To compare the clinical performance of refractive rotationally asymmetric multifocal intraocular lens (IOLs) with spherical monofocal, accommodating, and bifocal IOLs. Methods. A comprehensive literature search of PubMed, EMBASE, Cochrane Controlled Trials Register, and Web of Science up to February 2017 was performed to identify randomized controlled trials (RCT) and comparative cohort studies. Main outcomes were uncorrected distance visual acuity (UDVA), uncorrected intermediate visual acuity (UIVA), uncorrected near visual acuity (UNVA), higher-order aberrations (HOAs), MTF, Strehl ratio, and residual sphere and cylinder. Results. Mplus provided significantly worse UDVA than spherical monofocal IOLs (WMD: 0.13, P=0.008), but significantly better UIVA than high-add bifocal IOLs (WMD: −0.19, P<0.00001), spherical monofocal IOLs (WMD: −0.12, P<0.0001), and accommodating IOLs (WMD: −0.21, P<0.00001). Mplus provided significantly worse UNVA than high-add bifocal IOLs (WMD: 0.07, P<0.00001), but significantly better UNVA than spherical monofocal IOLs (WMD: −0.19, P<0.00001). Mplus resulted in significantly higher HOAs than high-add bifocal IOLs (WMD: 0.38, P<0.00001) and spherical monofocal IOLs (WMD: 0.51, P=0.0004). Mplus provided a significantly lower MTF cut-off and Strehl ratio than other type of IOLs. Conclusion. The Mplus IOLs perform best regarding intermediate visual acuity whereas they lack in distance visual acuity compared to monofocal IOLs and near visual acuity compared to bifocal IOLs. These results may be due to structure of Mplus IOLs resulting in higher-order aberrations.

scholarly journals Influence of Angle κ and Higher-Order Aberrations on Visual Quality Employing Two Diffractive Trifocal IOLs

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Cecilio Velasco-Barona ◽  
Claudia Corredor-Ortega ◽  
Alejandra Mendez-Leon ◽  
Nadia L. Casillas-Chavarín ◽  
Daniel Valdepeña-López Velarde ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Inverse Correlation ◽  
Higher Order ◽  
Controlled Study ◽  
Strehl Ratio ◽  
Higher Order Aberrations ◽  
Iol Implantation ◽  
Postoperative Visual Acuity ◽  
Uncorrected Distance Visual Acuity ◽  
Near Visual Acuity

Prospective, randomized, comparative, and controlled study to estimate the association between angle κ distance and higher-order aberrations (HOAs) with postoperative visual acuity after presbyopia-correcting IOL implantation. Forty-three eyes from 43 patients were included and randomly assigned in two groups for either AT LISA tri 839MP or Acrysof IQ PanOptix IOL implantation. The OPD-Scan III analyzer was utilized to assess the angle κ distance and higher-order aberration (HOAs). Twenty-three eyes were in the Acrysof IQ PanOptix group and 20 patients in the AT LISA tri 839MP group. The uncorrected distance visual acuity (UDVA) for the PanOptix group was 0.092 ± 0.10, whereas for AT LISA tri was 0.050 ± 0.06 (P=0.229). The uncorrected intermediate visual acuity (UIVA) for the PanOptix group was 0.173 ± 0.18, whereas for AT LISA tri, it was 0.182 ± 0.11 (P=0.669). Uncorrected near visual acuity (UNVA) was 0.068 ± 0.04 and 0.085 ± 0.07, respectively (P=0.221). Also, correlation coefficient between HOAs and the Strehl ratio for each group were −0.768 (P<0.0001) and −0.863 (P=0.0001). Patients implanted with both trifocal IOLs showed excellent postoperative visual performance at all distances at the six-month follow-up visit. No association was found between angle κ distance and postoperative visual acuity regardless of the angle κ magnitude or the two trifocal IOLs inner optical diameter. Also, internal aberrations demonstrated a significant inverse correlation with the Strehl ratio for both trifocal IOLs.

scholarly journals Corneal wavefront guided versus aberration free transepithelial photorefractive keratectomy in myopic patients with high pre-existing corneal higher order aberrations

2019 ◽  
Author(s):  
Amin Faisal Ellakwa ◽  
Marwa Ali Zaki ◽  
Rana Mohammed Ashour
Keyword(s):  
Visual Acuity ◽  
Higher Order ◽  
Single Step ◽  
Photorefractive Keratectomy ◽  
Higher Order Aberrations ◽  
Distance Visual Acuity ◽  
Randomized Controlled ◽  
Uncorrected Distance Visual Acuity ◽  
Significant Difference ◽  
Corrected Distance Visual Acuity

Abstract Objectives:to compare the efficacy, safety and predictability of corneal wavefront guided (WFG) and aberration free ablation in single-step transepithelial photorefractive keratectomy (TransPRK) in myopic patients with high pre-existing corneal higher order aberrations (HOAs). Background: Corneal WFG and aberration free treatments have been proposed as methods to achieve better visual, refractive, and optical outcomes. Methods:Non-randomized controlled trialwas conducted in El-HekmaEye-LASIK center, Menoufia governorate, Egypt during the period from January 2017 to December 2017. TransPRK was performed to eligible myopic patients with or without astigmatism with corneal HOAs ≥ 0.35 µmat 6 mm diameter utilizing either optimized (aberration free) or corneal WFG patterns (SCHWIND eye-tech-solutions, Kleinostheim, Germany). Uncorrected distance visual acuity (UDVA), manifest and cycloplegic refractions, best spectacle corrected distance visual acuity (CDVA), thorough slit lamp examination and corneal topography were assessed and repeated six months postoperatively. Results: Six months postoperatively, 97.6% and 100% of patients achieved MRSE within ± 1D with 76.2% and 66.67% of patients achieved UDVA of ≥20/20 in aberration free and corneal WFG groups respectively. Both groups showed increase in spherical and total corneal HOAs, with no significant difference in corneal WFG (p=0.08, p=0.28 respectively) while significantly higher postoperatively in aberration free group (p<0.001, p=0.001 respectively). Coma and trefoil aberrations declined after corneal WFG technique, yet increased after aberration free one. Conclusions: both aberration free and corneal WFG TransPRK were safe, effective and predictable in treatment of myopia in patients with high pre-existing corneal HOAs at 6 mm diameter with better aberrometric outcomes in corneal WFG group.

scholarly journals Corneal wavefront guided versus aberration free transepithelial photorefractive keratectomy in myopic patients with high pre-existing corneal higher order aberrations

2019 ◽  
Author(s):  
Amin Faisal Ellakwa ◽  
Marwa Ali Zaki ◽  
Rana Mohammed Ashour
Keyword(s):  
Visual Acuity ◽  
Higher Order ◽  
Single Step ◽  
Photorefractive Keratectomy ◽  
Higher Order Aberrations ◽  
Distance Visual Acuity ◽  
Randomized Controlled ◽  
Uncorrected Distance Visual Acuity ◽  
Significant Difference ◽  
Corrected Distance Visual Acuity

Abstract Objectives to compare the efficacy, safety and predictability of corneal wavefront guided (WFG) and aberration free ablation in single-step transepithelial photorefractive keratectomy (TransPRK) in myopic patients with high pre-existing corneal higher order aberrations (HOAs). Background Corneal WFG and aberration free treatments have been proposed as methods to achieve better visual, refractive, and optical outcomes. Methods Non-randomized controlled trailwas conducted in El-HekmaEye-LASIK center, Menoufia governorate, Egypt during the period from January 2017 to December 2017. TransPRK was performed to eligible myopic patients with or without astigmatism with corneal HOAs ≥ 0.35 µ utilizing either aberration free or corneal WFG patterns provided by ORKCAM software (SCHWIND eye-tech-solutions, Kleinostheim, Germany). Uncorrected distance visual acuity (UDVA), manifest and cycloplegic refractions, best spectacle corrected distance visual acuity (CDVA), thorough slit lamp examination and corneal topography were assessed and repeated six months postoperatively. Results Six months postoperatively, 97.6% and 100% of patients achieved MRSE within ± 1D with 76.2% and 66.67% of patients achieved UDVA of ≥20/20 in aberration free and corneal WFG groups respectively. Both groups showed increase in spherical and total corneal HOAs, with no significant difference in corneal WFG (p=0.08, p=0.28 respectively) while significantly higher postoperatively in aberration free group (p<0.001, p=0.001 respectively). Coma and trefoil aberrations declined after corneal WFG technique, yet increased after aberration free one. Conclusions both aberration free and corneal WFG TransPRK were safe, effective and predictable in treatment of myopia in patients with high pre-existing corneal HOAs with better aberrometric outcomes in corneal WFG group.

scholarly journals Corneal Asphericity and Higher-Order Aberrations after FS-LASIK and Trans-PRK for Myopia

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Yuan Wu ◽  
Shuhan Wang ◽  
Guiqin Wang ◽  
Shaozhen Zhao ◽  
Ruihua Wei ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Spherical Aberration ◽  
Higher Order ◽  
Corneal Surface ◽  
Higher Order Aberrations ◽  
Distance Visual Acuity ◽  
Corneal Aberrations ◽  
Astigmatism Correction ◽  
Uncorrected Distance Visual Acuity ◽  
Corneal Asphericity

Objective. To compare the corneal asphericity and higher-order aberrations (HOAs) of femtosecond laser-assisted in situ keratomileusis (FS-LASIK) with Smart Pulse Technology (SPT) assisted transepithelial photorefractive keratectomy (Trans-PRK) for myopia and myopic astigmatism correction. Methods. This prospective study analyzed 88 eyes of 44 patients treated with FS-LASIK and 64 eyes of 32 patients treated with Trans-PRK. All eyes had low to moderate myopia with or without astigmatism (spherical equivalent (SE) <−6.00 diopters). The uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), SE, asphericity (Q value) of the anterior corneal surface, index of surface variance (ISV), corneal higher-order aberrations (HOAs), vertical coma (Z3−1), horizontal coma (Z31), and spherical aberration (Z40) over a 6 mm diameter central corneal zone diameter were evaluated preoperatively and 1, 3, and 6 months postoperatively. Results. At 6 months, the UDVA and SE were −0.14 ± 0.06 and 0.33 ± 0.33D in FS-LASIK and −0.15 ± 0.06 and 0.35 ± 0.37D in Trans-PRK. There was no difference between the two groups in the postoperative UDVA and SE ( P > 0.05 ). After FS-LASIK and Trans-PRK, the Q values in the 6, 7, 8, and 9 mm zones and ISV of the anterior corneal surface significantly increased ( P < 0.001 ). At 1, 3, and 6 months after surgery, corneal HOA, Z3-1, Z31, and Z40 in both groups were significantly increased compared with those before surgery, with statistically significant differences ( P < 0.001 ). At 1, 3, and 6 months after surgery, the Z3−1 of the Trans-PRK group was significantly lower than that of the FS-LASIK group ( P < 0.001 ). ΔHOA and ΔZ40 were dramatically correlated with the ΔQ value for both FS-LASIK and Trans-PRK procedures. The ΔQ was significantly correlated with the preoperative SE, AD, and AD/CCT after both two procedures (all P < 0.001 ). Conclusions. Both FS-LASIK and Trans-PRK caused the anterior corneal surface to become flatter, and the morphology of the corneal surface was irregular. Corneal HOAs were significantly increased after the two procedures. Trans-PRK using SPT introduced less corneal vertical coma than FS-LASIK. Corneal asphericity changes contributed to the corneal aberrations changes following FS-LASIK and Trans-PRK.

scholarly journals Corneal wavefront guided versus aberration free transepithelial photorefractive keratectomy in myopic patients with high pre-existing corneal higher order aberrations

2019 ◽  
Author(s):  
Amin Faisal Ellakwa ◽  
Marwa Ali Zaki ◽  
Rana Mohammed Ashour
Keyword(s):  
Visual Acuity ◽  
Higher Order ◽  
Single Step ◽  
Photorefractive Keratectomy ◽  
Higher Order Aberrations ◽  
Distance Visual Acuity ◽  
Randomized Controlled ◽  
Uncorrected Distance Visual Acuity ◽  
Significant Difference ◽  
Corrected Distance Visual Acuity

Abstract Objectives to compare the efficacy, safety and predictability of corneal wavefront guided (WFG) and aberration free ablation in single-step transepithelial photorefractive keratectomy (TransPRK) in myopic patients with high pre-existing corneal higher order aberrations (HOAs). Background Corneal WFG and aberration free treatments have been proposed as methods to achieve better visual, refractive, and optical outcomes. Methods Non-randomized controlled trailwas conducted in El-HekmaEye-LASIK center, Menoufia governorate, Egypt during the period from January 2017 to December 2017. TransPRK was performed to eligible myopic patients with or without astigmatism with corneal HOAs ≥ 0.35 µ utilizing either aberration free or corneal WFG patterns provided by ORKCAM software (SCHWIND eye-tech-solutions, Kleinostheim, Germany). Uncorrected distance visual acuity (UDVA), manifest and cycloplegic refractions, best spectacle corrected distance visual acuity (CDVA), thorough slit lamp examination and corneal topography were assessed and repeated six months postoperatively. Results Six months postoperatively, 97.6% and 100% of patients achieved MRSE within ± 1D with 76.2% and 66.67% of patients achieved UDVA of ≥20/20 in aberration free and corneal WFG groups respectively. Both groups showed increase in spherical and total corneal HOAs, with no significant difference in corneal WFG (p=0.08, p=0.28 respectively) while significantly higher postoperatively in aberration free group (p<0.001, p=0.001 respectively). Coma and trefoil aberrations declined after corneal WFG technique, yet increased after aberration free one. Conclusions both aberration free and corneal WFG TransPRK were safe, effective and predictable in treatment of myopia in patients with high pre-existing corneal HOAs with better aberrometric outcomes in corneal WFG group.

Laser in Situ Keratomileusis for High Hyperopia with Corneal Vertex Centration and Asymmetric Offset

2016 ◽  
Vol 27 (2) ◽  
pp. 141-152 ◽  
Author(s):  
Diego de Ortueta ◽  
Sam Arba-Mosquera
Keyword(s):  
Visual Acuity ◽  
Spherical Aberration ◽  
Higher Order ◽  
Laser In Situ Keratomileusis ◽  
Higher Order Aberrations ◽  
Distance Visual Acuity ◽  
Refractive Outcomes ◽  
Uncorrected Distance Visual Acuity ◽  
High Hyperopia

Purpose To investigate refractive outcomes and induction of corneal higher order aberrations (HOA) in eyes that underwent laser-assisted in situ keratomileusis (LASIK) for high hyperopia correction using an aberration neutral profile with corneal vertex centration and asymmetric offset. Methods A total of 24 consecutive patients (38 eyes) who underwent LASIK by one surgeon using AMARIS 750S excimer laser and a Carriazo-Pendular microkeratome for flap creation were retrospectively analyzed. Eyes targeted for plano and with correction in the maximum hyperopic meridian strictly higher than +4D were included in the retrospective analysis. Patients were reviewed at 1, 3, and 6 months postoperatively. Postoperative monocular corrected distance visual acuity (CDVA) and uncorrected distance visual acuity (UDVA), manifest refraction, and corneal wavefront aberrations were compared with respective preoperative metrics. Results Mean preoperative spherical equivalent and refractive astigmatism was +4.07 ± 0.90 D and 1.37 ± 1.26 D, respectively, reducing to +0.28 ± 0.58D (p<0.0001) and 0.49 ± 0.47 D (p = 0.0001) at the last postoperative visit. Six months postoperatively, 78% of eyes achieved a UDVA of 20/25 or better. No eye lost more than 2 Snellen lines of CDVA at any follow-up. There was a statistically significant induction of vertical trefoil (+0.104 ± 0.299 µm, p<0.05), vertical coma (-0.181 ± 0.463 µm, p<0.01), horizontal coma (+0.198 ± 0.663 µm, p<0.05), spherical aberration (-0.324 ± 0.281 µm, p<0.0001), secondary vertical trefoil (+0.018 ± 0.044 µm, p<0.01), and secondary horizontal coma (+0.026 ± 0.083 µm, p<0.05) Conclusions Laser-assisted in situ keratomileusis for high hyperopia using corneal vertex centration with asymmetric offset results in significant improvement in refraction and visual acuity although affected by significant induction of some higher order aberrations.

scholarly journals Corneal wavefront guided versus aberration free transepithelial photorefractive keratectomy in myopic patients with high pre-existing corneal higher order aberrations

2019 ◽  
Author(s):  
Amin Faisal Ellakwa ◽  
Marwa Ali Zaki ◽  
Rana Mohammed Ashour
Keyword(s):  
Visual Acuity ◽  
Higher Order ◽  
Single Step ◽  
Photorefractive Keratectomy ◽  
Higher Order Aberrations ◽  
Distance Visual Acuity ◽  
Randomized Controlled ◽  
Uncorrected Distance Visual Acuity ◽  
Significant Difference ◽  
Corrected Distance Visual Acuity

Abstract Objectives to compare the efficacy, safety and predictability of corneal wavefront guided (WFG) and aberration free ablation in single-step transepithelial photorefractive keratectomy (TransPRK) in myopic patients with high pre-existing corneal higher order aberrations (HOAs). Background Corneal WFG and aberration free treatments have been proposed as methods to achieve better visual, refractive, and optical outcomes. Methods Non-randomized controlled trailwas conducted in El-HekmaEye-LASIK center, Menoufia governorate, Egypt during the period from January 2017 to December 2017. TransPRK was performed to eligible myopic patients with or without astigmatism with corneal HOAs ≥ 0.35 µ utilizing either aberration free or corneal WFG patterns provided by ORKCAM software (SCHWIND eye-tech-solutions, Kleinostheim, Germany). Uncorrected distance visual acuity (UDVA), manifest and cycloplegic refractions, best spectacle corrected distance visual acuity (CDVA), thorough slit lamp examination and corneal topography were assessed and repeated six months postoperatively. Results Six months postoperatively, 97.6% and 100% of patients achieved MRSE within ± 1D with 76.2% and 66.67% of patients achieved UDVA of ≥20/20 in aberration free and corneal WFG groups respectively. Both groups showed increase in spherical and total corneal HOAs, with no significant difference in corneal WFG (p=0.08, p=0.28 respectively) while significantly higher postoperatively in aberration free group (p<0.001, p=0.001 respectively). Coma and trefoil aberrations declined after corneal WFG technique, yet increased after aberration free one. Conclusions both aberration free and corneal WFG TransPRK were safe, effective and predictable in treatment of myopia in patients with high pre-existing corneal HOAs with better aberrometric outcomes in corneal WFG group.

scholarly journals Optimal Keratoplasty for the Correction of Presbyopia and Hypermetropia

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Daniele Veritti ◽  
Valentina Sarao ◽  
Paolo Lanzetta
Keyword(s):  
Visual Acuity ◽  
Patient Satisfaction ◽  
Postoperative Complications ◽  
Safety And Efficacy ◽  
Distance Visual Acuity ◽  
Uncorrected Distance Visual Acuity ◽  
Ophthalmologic Examination ◽  
Near Visual Acuity ◽  
Better Than

Purpose.To evaluate prospectively the safety and efficacy of optimal keratoplasty for the correction of hyperopia and presbyopia.Methods. Consecutive patients undergoing bilateral optimal keratoplasty for refractive presbyopic and hypermetropic corrections were enrolled. Each patient received a complete ophthalmologic examination at baseline, 1 hour, 1 day, 1 week, 1 month, 3 months, and 6 months after treatment.Results. The study included 40 consecutive eyes of 20 patients. All patients reached the 6-month follow-up. No serious intra- or postoperative complications were recorded. Monocular and binocular uncorrected near visual acuities improved significantly during the follow-up (p<0.001). Binocular uncorrected distance visual acuity in presbyopic patients improved from 0.28 logMAR to a maximum of 0.04 logMAR (from 20/38 to 20/22 Snellen equivalent) the day after the treatment and remained significantly better than baseline until the end of the follow-up. A significant improvement of patient satisfaction for near (p<0.001) and distance (p=0.007) activities was seen the day after treatment and was maintained throughout the follow-up.Conclusions.Optimal keratoplasty is a safe, noninvasive, rapid, pain-free, office-based procedure. It offers low to moderate hyperopes and presbyopes an improvement in uncorrected near visual acuity while maintaining or improving their distance visual acuity.

Higher-Order Aberrations Associated With Better Near Visual Acuity in Eyes With Aspheric Monofocal IOLs

2014 ◽  
Vol 30 (7) ◽  
pp. 442-446 ◽  
Author(s):  
In Seok Song ◽  
Myoung Joon Kim ◽  
Sam Young Yoon ◽  
Jae Yong Kim ◽  
Hungwon Tchah
Keyword(s):  
Visual Acuity ◽  
Higher Order ◽  
Higher Order Aberrations ◽  
Near Visual Acuity

scholarly journals 3 Years Clinical Outcomes of Aspheric Micro-monovision LASIK for Correction of Presbyopia and Myopic Astigmatism

2019 ◽  
Author(s):  
Fang Liu ◽  
Ting Zhang ◽  
Quan Liu
Keyword(s):  
Visual Acuity ◽  
Subjective Rating ◽  
Spherical Equivalent ◽  
Distance Visual Acuity ◽  
Uncorrected Distance Visual Acuity ◽  
High Satisfaction ◽  
Manifest Refraction ◽  
Corrected Distance Visual Acuity ◽  
Near Visual Acuity

Abstract Background: To investigate long term safety and efficacy of aspheric micro-monovision LASIK for correction of presbyopia and myop ic astigmatism. Methods: One hundred and fourteen eyes of 57 patients with a mean age 48 ± 4.05 years (range: 43 to 62 years) undergoing aspheric micro-monovision LASIK treatment using the MEL 80 excimer laser (Carl Zeiss Meditec AG, Jena, Germany) were enrolled. Visual acuity, manifest refraction, amplitude of accommodation and patients’ subjective rating was evaluated from 1 day to 3 years postoperatively. Results: There were no eyes in which spherical equivalent changed by over 0.75D between 1 day and 3 years. Ninety five percent of eyes were within ±0.50 D of target correction of spherical equivalent. The percentage of monocular uncorrected distance visual acuity ≧20/20 was 95%,and all eyes achieved 20/25 or better. The percentage of binocular uncorrected near visual acuity ≧J2 was 93%,and all patients achieved J4 or better. Ninety one percent of the patients could see uncorrected both 20/20 and J2 or better binocularly. Six percent (6/108) eyes lost 1 line and no eyes lost 2 lines of corrected distance visual acuity. The overall satisfaction score for surgery was 93±6. Conclusions: The aspheric micro-monovision LASIK using the Carl Zeiss Meditec MEL 80 Platform was an efficacious option for older myopia patients with presbyopia. Three years postoperative outcomes in Chinese population indicated improvements in uncorrected binocular vision at far and near distances with high satisfaction.

Sign in / Sign up

Export Citation Format

Share Document