Optical Assessment and Expected Visual Quality of Four Extended Range of Vision Intraocular Lenses

Azor, Juan Antonio; Vega, F.; Armengol, Jesús; Millán, Marı́a S.

doi:10.3928/1081597x-20220926-01

Cited by 20 publications

(18 citation statements)

References 27 publications

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“…The visual quality evaluated with the double-pass system OQAS showed similar MTF and SR values for both lenses, although the MTF cut-off frequency was higher than normal for both lenses, having an average value close to 30 c/deg, with the 4.0-mm pupil diameter set with the OQAS. These 'in-vivo' findings with the ISOPure lens are in line with those obtained by Alarcon et al 19 and Azor-Moron et al 20 on an optical bench.…”

Section: Discussionsupporting

confidence: 90%

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Optical and aberrometric evaluation of a new enhanced monofocal intraocular lens with isofocal optic design

Pérez‐Sanz,

Charbel,

Poyales

et al. 2024

Ophthalmic Physiologic Optic

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PurposeTo evaluate the optical and aberrometric outcomes of an enhanced monofocal intraocular lens (ISOPure) compared with those of a standard monofocal lens (MicroPure) having the same platform and material.MethodsA prospective, comparative and randomised clinical study. A total of 28 eyes of 28 patients were randomly assigned to either group. Monocular visual acuity (VA) was measured at distance and intermediate under photopic and mesopic conditions. Aberrometry was analysed for 3.0‐, 4.0‐, 4.5‐ and 5.0 mm pupils. The contrast sensitivity defocus curve was measured for 3.0‐ and 4.5‐mm pupils, while the modulation transfer function (MTF) and Strehl ratio (SR) were assessed with a double‐pass system. All measurements were performed monocularly 3 months after surgery.ResultsNo significant differences were found for distance VA. Under photopic conditions, intermediate VA was better with the ISOPure lens, while no significant differences were found between the lenses under mesopic conditions. Internal and total aberrations were higher for the ISOPure lens. No significant differences were found for corneal aberrations. Additionally, both the contrast sensitivity defocus curve and optical quality showed similar behaviour for each lens, with the MTF cut‐off frequency exceeding 30 c/deg in both cases.ConclusionThe isofocal ISOPure lens enhanced intermediate VA without affecting distance VA under photopic conditions. Moreover, there were no significant differences in visual quality between the ISOPure and MicroPure lenses, despite the former exhibiting higher internal and total aberrations than the monofocal model.

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Section: Discussionsupporting

confidence: 90%

“…These ‘in‐vivo’ findings with the ISOPure lens are in line with those obtained by Alarcon et al 19 . and Azor‐Moron et al 20 . on an optical bench.…”

Section: Discussionmentioning

confidence: 96%

Optical and aberrometric evaluation of a new enhanced monofocal intraocular lens with isofocal optic design

Pérez‐Sanz,

Charbel,

Poyales

et al. 2024

Ophthalmic Physiologic Optic

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“…After the full text evaluation, three clinical studies were excluded since the inclusion criteria was not accomplished, [11][12][13] and one mixed was maintained (partly excluded) since the criteria was accomplished in the laboratory study context but not in the clinical [14]. During the search update in the moment of data extraction, three papers were included, two not indexed in the databases and found through snowballing techniques, [15,16] and 1 new after search update [17]. Finally, 38 studies were included in the data extraction process (Fig.…”

Section: Study Inclusionmentioning

confidence: 99%

“…With regard optical quality metrics, the depth of focus achieved for predicted visual acuity of 0.2 logMAR and the increase range in comparison to a standard monofocal was retrieved for 4 manuscripts (Table 1) [15,[18][19][20]. Three papers showed the influence of the IOL centration on the modulation transfer function (MTF) at 50 lp/mm (Table 2) [21][22][23].…”

Section: Laboratory Studiesmentioning

confidence: 99%

Positioning of enhanced monofocal intraocular lenses between conventional monofocal and extended depth of focus lenses: a scoping review

et al. 2023

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Background New intraocular lenses (IOLs) have emerged since the originally coined monofocal and multifocal IOLs. The extended depth of focus (EDoF) and enhanced monofocal IOLs (mono-EDoF) that have appeared in the last decade have caused some confusion in their classification. The aim of this review was to summarize the outcomes provided by mono-EDOF IOLs and to determine which of the endpoints, described by the American National Standard (ANSI) for EDoF IOLs, are fulfilled. Methods The MEDLINE, EMBASE, and WEB OF SCIENCE databases were searched. Two independent reviewers screened the studies for inclusion and data extraction. The search strategy was limited to studies published between 2020 and 2022, but not by language. The results are presented as a narrative summary accompanied by tables, in alignment with the objectives of this scoping review. Compliance with the endpoints for clinical outcomes described in the American National Standard Z80.35–2018 (ANSI) for EDoF lenses was checked and additional endpoints were defined. Results Two systematic reviews, 13 laboratory, 21 clinical, and two mixed studies were included. Tecnis Eyhance was the mono-EDOF with the highest volume of evidence to date. Although laboratory studies included other IOLs, clinical evidence for them is still scarce, with only one study of IsoPure compared to a standard monofocal IOL. Evidence in comparison to EDoF lenses is also scarce, even for Tecnis Eyhance, with only three studies including this lens in comparison to an EDoF lens. After evaluation of the ANSI criteria, agreement was found in the failure for the increase in depth of field equal to or greater than 0.5 D for a visual acuity (VA) level of 0.2 logMAR and none of the studies supported that the median monocular VA at intermediate distance was at least 0.2 logMAR. Conclusions Additional clinical evidence is required for other mono-EDOF IOLs beyond Tecnis Eyhance. Until the arrival of a standard classification, mono-EDOF should be better still classified as monofocal because the ANSI standards were not fully met.

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“…19 We would anticipate that the slightly increased depth of focus that has been reported with this IOL depends on pupil constriction induced by accommodation. 20,21 Our visual tests were performed with a fixed pupil size of 4.5 mm. As such, the finding that the IOL with zero SA had better DCIVA at low contrast was anticipated.…”

Section: Discussionmentioning

confidence: 99%

Impact of Spherical Aberration on Visual Quality and Depth of Focus in Pseudophakic Eyes

Kozhaya,

Kenny,

Esfandiari

et al. 2023

J Cataract Refract Surg

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Purpose: Assess the performances of four intraocular lenses (IOLs) in various spherical aberration (SA) conditions, using the VAO adaptive optics simulator (Voptica S.L.). Setting: Cullen Eye Institute, Baylor College of Medicine, Houston, TX. Design: Prospective case series. Methods: Distance-corrected visual acuities at distance (CDVA), intermediate (DCIVA), and near (DCNVA) were measured in 42 dilated pseudophakic eyes at baseline and with ocular SA ranging from –0.4 to +0.4 μm in increments of 0.2 μm (6.0-mm pupil). Four IOL types were assessed: monofocal IOLs with zero-SA, enhanced-monofocal, extended depth-of-focus (EDoF), and continuous-range-of-vision. Results: Compared to SA = 0μm, significant changes (all P<.05) were: 1) zero-SA monofocal IOLs’ DCNVA at high contrast improved by 0.13 logMAR with SA = – 0.4 μm and worsened by 0.09 and 0.10 logMAR with SA = +0.2 and +0.4 μm, respectively. DCNVA at low contrast worsened by 0.09 logMAR with SA = +0.4 μm; and 2) with SA = –0.4 μm, the enhanced monofocal IOL lost 0.06 logMAR of CDVA at high contrast and gained 0.09 logMAR of DCNVA at low contrast. There were no significant changes from SA = 0 μm for EDoF and continuous-range-of-vision IOLs. Conclusions: Zero-SA and EDoF IOLs were the most and least sensitive to SA modulation, respectively. In perfect optical systems where all the optical elements are aligned, induction of targeted amounts of negative SA improved the depth of focus of some IOL types. We found no benefit with positive SA.

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Optical Assessment and Expected Visual Quality of Four Extended Range of Vision Intraocular Lenses

Cited by 20 publications

References 27 publications

Optical and aberrometric evaluation of a new enhanced monofocal intraocular lens with isofocal optic design

Optical and aberrometric evaluation of a new enhanced monofocal intraocular lens with isofocal optic design

Positioning of enhanced monofocal intraocular lenses between conventional monofocal and extended depth of focus lenses: a scoping review

Impact of Spherical Aberration on Visual Quality and Depth of Focus in Pseudophakic Eyes

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