ArticleJournal of cataract and refractive surgery2026
Simulated ocular biometry effects on add-power demand in multifocal intraocular lenses.
Article in Journal of cataract and refractive surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo use ray-tracing simulations to assess the dependency of add-power demand on ocular biometry.
settingDavid J. Apple Laboratory for Ocular Pathology, Department of Ophthalmology, University of Heidelberg, Heidelberg, Germany.
designExperimental study.
methodsOptical biometry of 34 patients scheduled for routine cataract surgery was collected and the following parameters used to build a personalized eye model: keratometry (K), anterior chamber depth (ACD), and axial length (AL). Ray-tracing software was applied for pseudophakic-eye simulations. Each model featured a biconvex lens with radii of curvature adjusted for best distance vision. Trial spectacles with -4 diopters (D), -3 D, -2 D, and -1.5 D were placed in front of a virtual eye. The intraocular lens (IOL)-power change required to induce a desirable near/intermediate effect at the spectacle plane was calculated for the far-point condition.
resultsMean values for K, ACD, and AL were 7.79 ± 0.24 mm, 3.22 ± 0.60 mm, and 23.77 ± 1.34 mm, respectively. The lowest and highest add power (IOL plane) varied by 0.39 D, 0.52 D, 0.76 D, and 0.98 D for -1.5 D, -2 D, -3 D, and -4 D trial spectacles, respectively. High correlation was found between the observed add-power change and the ACD, indicating a linear increase of the add-power demand for larger ACD values. The AL and the K demonstrated poor or no correlation with the required IOL-power adjustment.
conclusionsThe ACD, which determines the effective lens position in our model, has greater impact on add-power demand than AL or K. The reported change may contribute to interparticipant variability in defocus curves of multifocal patients.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.