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Supported by ERC Grant Agreement (ERC-2011-AdG-294099) and Spanish Government grant FIS 2017-84753 (SM); Spanish Ministry of Science Aids for recruiting Technical Support Personnel PTA2017-13787-I (MR), and Madrid Regional Government Spanish Ministry of Science Aids for recruiting Technical Support Personnel PTA2017-13787-I (AG-R). The study was partially funded by a Research Collaborative Agreement with Alcon Research Labs.

Analysis of institutional authors

Jimenez-Alfaro, IgnacioAuthor
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Article

Interaction of Monochromatic and Chromatic Aberrations in Pseudophakic Patients

Publicated to:JOURNAL OF REFRACTIVE SURGERY. 36 (4): 230-+ - 2020-04-01 36(4), DOI: 10.3928/1081597X-20200303-01

Authors: Marcos, Susana; Romero, Mercedes; Benedi-Garcia, Clara; Gonzalez-Ramos, Ana; Vinas, Maria; Alejandre, Nicolas; Jimenez-Alfaro, Ignacio;

Affiliations

CSIC, IO, Inst Opt Daza de Valdes, Madrid, Spain - Author
Fdn Jimenez Diaz, Madrid, Spain - Author

Abstract

PURPOSE: To measure monochromatic aberrations at various wavelengths in eyes implanted with the Clareon monofocal aspheric intraocular lens (IOL) (Alcon Laboratories, Inc., Fort Worth, TX). The authors estimated longitudinal chromatic aberration (LCA), modulation transfer functions (MTFs), and the impact of interactions between chromatic and monochromatic aberrations on retinal image quality.METHODS: Ten patients (age: 68.4 +/- 3.21 years) were measured in two experiments: (1) Hartmann-Shack wave aberrations at five visible wavelengths (480 to 700 nm) and (2) best subjective focus at each wavelength. Objective and psychophysical LCAs were obtained from the Zernike defocus and psychophysical best focus, respectively. MTFs were calculated for the closest wavelengths to the peak sensitivity of the three cone classes (S [480 nm], M [555 nm], and L [564 nm]) using the measured aberrations and chromatic difference of focus. The degradation produced by LCA was estimated as the visual Strehl ratio for green divided by the visual Strehl ratio for blue and red.RESULTS: The root mean square for higher order aberrations (HOAs) ranged from 0.0622 to 0.2084 mu m (700 nm, 4.3-mm pupil). Monochromatic visual Strehl ratio was above 0.35 in all patients. LCA was 1.23 +/- 0.05 diopters (D) (psychophysical) and 0.90 +/- 0.11 D (objective). Visual Strehl ratio decreased by a factor ranging from 1.38 to 3.82 on chromatic defocus from green to blue. There was a significant correlation between native visual Strehl ratio and the degradation produced by LCA (ie, visual Strehl(555)/visual Strehl(480)).CONCLUSIONS: The Clareon IOL compensates for spherical aberration, with postoperative wave aberrations dominated by astigmatism and other HOAs, being highly subject-dependent. The impact of LCA in blue is largely dependent on the magnitude of monochromatic aberrations.

Keywords
DepthFocusHuman eyeIn-vivoIntraocular lensesOpticsQualitySpherical-aberration

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal JOURNAL OF REFRACTIVE SURGERY due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2020, it was in position 15/62, thus managing to position itself as a Q1 (Primer Cuartil), in the category Ophthalmology.

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 1.97, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions May 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-05-15, the following number of citations:

  • WoS: 4
  • Scopus: 6
  • OpenCitations: 7
Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-05-15:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 22.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 22 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 4.55.
  • The number of mentions on the social network X (formerly Twitter): 7 (Altmetric).
Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: Last Author (JIMENEZ-ALFARO MOROTE, IGNACIO).