Spectral Effects and Range of Focus in a Multizonal-Refractive Intraocular Lens Compared with a Standard Trifocal Diffractive Design
Abstract Introduction This study was performed to compare the optical performance of a multizonal presbyopia-correcting intraocular lens (IOL) and a conventional trifocal model. Methods The optical quality and simulated visual acuity (VA) of 570 Precizon Presbyopic NVA (OPHTEC BV) and AcrySof IQ Pan...
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| Format: | Article |
| Language: | English |
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Adis, Springer Healthcare
2023-03-01
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| Series: | Ophthalmology and Therapy |
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| Online Access: | https://doi.org/10.1007/s40123-023-00679-z |
| _version_ | 1827952860824862720 |
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| author | Weijia Yan Gerd U. Auffarth Ramin Khoramnia Grzegorz Łabuz |
| author_facet | Weijia Yan Gerd U. Auffarth Ramin Khoramnia Grzegorz Łabuz |
| author_sort | Weijia Yan |
| collection | DOAJ |
| description | Abstract Introduction This study was performed to compare the optical performance of a multizonal presbyopia-correcting intraocular lens (IOL) and a conventional trifocal model. Methods The optical quality and simulated visual acuity (VA) of 570 Precizon Presbyopic NVA (OPHTEC BV) and AcrySof IQ PanOptix (Alcon) were compared. The Precizon features a refractive design consisting of alternating optical zones that converge the incident light into two principal foci and a transitional zone for intermediate vision. By contrast, the PanOptix applies a diffractive (non-apodized) profile to achieve trifocality. Simulated VA was derived from the modulation transfer function. Chromatic aberration effects were also studied. Results The diffractive and multizonal-refractive lenses yielded comparable simulated VAs at far focus (0.00 logMAR). All curves showed a reduction in expected VA with an increase in negative defocus. At − 1.0 D, the multizonal-refractive IOL's VA dropped by 0.05 logMAR, but for the diffractive model, it was one line (0.11 logMAR). The multizonal-refractive lens's VA prediction at the secondary peak was 0.03 logMAR—minimally better than the 0.06 logMAR of the diffractive lens at − 2.5 D. The refractive lens exhibited a 24% decrease in polychromatic optical quality due to material dispersion. The performance of PanOptix was more substantially affected, showing a 44% loss at 50 lp/mm at far, with minimal effects at other distances. Conclusion The multizonal-refractive lens does not fall short of the established trifocal IOL, and it can be used to extend the visual range of pseudophakic patients. Although the multizonal-refractive lens has lower material dispersion, the diffractive model corrects chromatism beyond far focus. |
| first_indexed | 2024-04-09T14:04:13Z |
| format | Article |
| id | doaj.art-45ed77e58a914e019e514c530a47aaae |
| institution | Directory Open Access Journal |
| issn | 2193-8245 2193-6528 |
| language | English |
| last_indexed | 2024-04-09T14:04:13Z |
| publishDate | 2023-03-01 |
| publisher | Adis, Springer Healthcare |
| record_format | Article |
| series | Ophthalmology and Therapy |
| spelling | doaj.art-45ed77e58a914e019e514c530a47aaae2023-05-07T11:07:46ZengAdis, Springer HealthcareOphthalmology and Therapy2193-82452193-65282023-03-011231621163410.1007/s40123-023-00679-zSpectral Effects and Range of Focus in a Multizonal-Refractive Intraocular Lens Compared with a Standard Trifocal Diffractive DesignWeijia Yan0Gerd U. Auffarth1Ramin Khoramnia2Grzegorz Łabuz3Department of Ophthalmology, The David J. Apple Center for Vision Research, University Hospital HeidelbergDepartment of Ophthalmology, The David J. Apple Center for Vision Research, University Hospital HeidelbergDepartment of Ophthalmology, The David J. Apple Center for Vision Research, University Hospital HeidelbergDepartment of Ophthalmology, The David J. Apple Center for Vision Research, University Hospital HeidelbergAbstract Introduction This study was performed to compare the optical performance of a multizonal presbyopia-correcting intraocular lens (IOL) and a conventional trifocal model. Methods The optical quality and simulated visual acuity (VA) of 570 Precizon Presbyopic NVA (OPHTEC BV) and AcrySof IQ PanOptix (Alcon) were compared. The Precizon features a refractive design consisting of alternating optical zones that converge the incident light into two principal foci and a transitional zone for intermediate vision. By contrast, the PanOptix applies a diffractive (non-apodized) profile to achieve trifocality. Simulated VA was derived from the modulation transfer function. Chromatic aberration effects were also studied. Results The diffractive and multizonal-refractive lenses yielded comparable simulated VAs at far focus (0.00 logMAR). All curves showed a reduction in expected VA with an increase in negative defocus. At − 1.0 D, the multizonal-refractive IOL's VA dropped by 0.05 logMAR, but for the diffractive model, it was one line (0.11 logMAR). The multizonal-refractive lens's VA prediction at the secondary peak was 0.03 logMAR—minimally better than the 0.06 logMAR of the diffractive lens at − 2.5 D. The refractive lens exhibited a 24% decrease in polychromatic optical quality due to material dispersion. The performance of PanOptix was more substantially affected, showing a 44% loss at 50 lp/mm at far, with minimal effects at other distances. Conclusion The multizonal-refractive lens does not fall short of the established trifocal IOL, and it can be used to extend the visual range of pseudophakic patients. Although the multizonal-refractive lens has lower material dispersion, the diffractive model corrects chromatism beyond far focus.https://doi.org/10.1007/s40123-023-00679-zTrifocal IOLsMultizonal-refractive IOLsOptical performanceChromatic aberration |
| spellingShingle | Weijia Yan Gerd U. Auffarth Ramin Khoramnia Grzegorz Łabuz Spectral Effects and Range of Focus in a Multizonal-Refractive Intraocular Lens Compared with a Standard Trifocal Diffractive Design Ophthalmology and Therapy Trifocal IOLs Multizonal-refractive IOLs Optical performance Chromatic aberration |
| title | Spectral Effects and Range of Focus in a Multizonal-Refractive Intraocular Lens Compared with a Standard Trifocal Diffractive Design |
| title_full | Spectral Effects and Range of Focus in a Multizonal-Refractive Intraocular Lens Compared with a Standard Trifocal Diffractive Design |
| title_fullStr | Spectral Effects and Range of Focus in a Multizonal-Refractive Intraocular Lens Compared with a Standard Trifocal Diffractive Design |
| title_full_unstemmed | Spectral Effects and Range of Focus in a Multizonal-Refractive Intraocular Lens Compared with a Standard Trifocal Diffractive Design |
| title_short | Spectral Effects and Range of Focus in a Multizonal-Refractive Intraocular Lens Compared with a Standard Trifocal Diffractive Design |
| title_sort | spectral effects and range of focus in a multizonal refractive intraocular lens compared with a standard trifocal diffractive design |
| topic | Trifocal IOLs Multizonal-refractive IOLs Optical performance Chromatic aberration |
| url | https://doi.org/10.1007/s40123-023-00679-z |
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