Recent developments in intraocular lens power calculation methods—update 2020 Article Swipe
Giacomo Savini
,
Leonardo Taroni
,
Kenneth J. Hoffer
·
YOU?
·
· 2020
· Open Access
·
· DOI: https://doi.org/10.21037/atm-20-2290
YOU?
·
· 2020
· Open Access
·
· DOI: https://doi.org/10.21037/atm-20-2290
For many decades only a few formulas have been available to calculate the intraocular lens (IOL) power for patients undergoing cataract surgery: the Haigis, Hoffer Q, Holladay 1 and 2 and SRK/T. In recent years, several new formulas for IOL power calculation have been introduced with the aim of improving the accuracy of refraction prediction in eyes undergoing cataract surgery. These include the Barrett Universal II, the Emmetropia Verifying Optical (EVO), the Kane, the Næser 2, the Olsen, the Panacea, the Pearl DGS, the Radial Basis Function (RBF), the T2 and the VRF formulas. Although most of them are unpublished so that their structure is unknown, we give an overview of each formula and report the results of the studies that have compared them. Their performance in short and long eyes is provided and a special focus is given on the issue of segmented axial length, which is a promising method to obtain more accurate outcomes in short and long eyes. Here, the group refractive index originally developed for the IOLMaster may not represent the best method to convert the optical path length into a physical distance. The issue of posterior and total corneal astigmatism (TCA) is discussed in relation to toric IOLs; the latest formulas for toric IOLs and their results are also reported.
Related Topics
Concepts
Emmetropia
Intraocular lens power calculation
Cataract surgery
Intraocular lenses
Astigmatism
Optometry
Ophthalmology
Intraocular lens
Medicine
Refraction
Mathematics
Computer science
Optics
Refractive error
Visual acuity
Physics
Keratometer
Metadata
- Type
- review
- Language
- en
- Landing Page
- https://doi.org/10.21037/atm-20-2290
- https://atm.amegroups.com/article/viewFile/49233/pdf
- OA Status
- diamond
- Cited By
- 106
- References
- 70
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W3048487682
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W3048487682Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.21037/atm-20-2290Digital Object Identifier
- Title
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Recent developments in intraocular lens power calculation methods—update 2020Work title
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reviewOpenAlex work type
- Language
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enPrimary language
- Publication year
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2020Year of publication
- Publication date
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2020-11-01Full publication date if available
- Authors
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Giacomo Savini, Leonardo Taroni, Kenneth J. HofferList of authors in order
- Landing page
-
https://doi.org/10.21037/atm-20-2290Publisher landing page
- PDF URL
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https://atm.amegroups.com/article/viewFile/49233/pdfDirect link to full text PDF
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YesWhether a free full text is available
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diamondOpen access status per OpenAlex
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https://atm.amegroups.com/article/viewFile/49233/pdfDirect OA link when available
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Emmetropia, Intraocular lens power calculation, Cataract surgery, Intraocular lenses, Astigmatism, Optometry, Ophthalmology, Intraocular lens, Medicine, Refraction, Mathematics, Computer science, Optics, Refractive error, Visual acuity, Physics, KeratometerTop concepts (fields/topics) attached by OpenAlex
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106Total citation count in OpenAlex
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2025: 16, 2024: 24, 2023: 29, 2022: 23, 2021: 14Per-year citation counts (last 5 years)
- References (count)
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70Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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