ArticleClinical ophthalmology (Auckland, N.Z.)2022
Optical Biometry and Lens Power Calculations in 500 Phakic Patients: Axial Length and Corneal Curvature in the Fellow Eye.
Article in Clinical ophthalmology (Auckland, N.Z.), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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
1 citing paper in PubMed, 1 citations in OpenAlex.
- Fellow eye data for intraocular lens calculation in eyes undergoing combined phacovitrectomy.Acta ophthalmologica · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Objective: In eyes with severe corneal pathology, biometric measurements of the corneal curvature (K) can be challenging. The aims of this study were to test whether K mean values from the fellow eye can be used as substitute in lens power calculations and to determine if similarity in axial length (AL) in a patient's two eyes implies similarity also in the corneal curvature. Methods and Analysis: A retrospective study of optical biometry measurements in 500 adults (1000 phakic eyes) that was scheduled for cataract surgery. Inclusion criteria were complete recordings of all parameters in both eyes and a signal-to-noise ratio of at least 10. Similar AL was defined as less than 0.3 mm difference between the patient's two eyes. Results: The IOL power calculated with K mean from the fellow eye was 0.39 D (standard deviation (SD) 0.57) different from the calculation with both AL and K mean from the correct eye. The difference was larger than 1.0 D in 26 (5%) eyes. In patients with similar AL in their two eyes (n = 372), the interocular difference in K mean was 0.43 D (SD 0.67 D), compared to 0.45 D (SD 0.49 D) for the patients with an AL difference of 0.3 mm or more (n = 128) (p = 0.81). Conclusion: Lens calculations with keratometry values from the fellow eye as substitute yielded quite similar results as calculations with the correct values. Hence, this seems to be an acceptable approach in patients with incomplete keratometry recordings. Similarity in AL between a person's two eyes did not imply more similar corneal curvatures.
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.