ArticleInternational ophthalmology2025
Quantifying posterior corneal astigmatism's contribution to ocular residual astigmatism: implications for personalized refractive surgery.
Article in International ophthalmology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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
2 citing papers in PubMed.
- Optimization of the Ocular Surface Prior to Cataract Surgery Using Cryopreserved Amniotic Membrane.Clinical ophthalmology (Auckland, N.Z.) · 2025Article
- The Incidence of Posterior Ocular Astigmatism in a Refractive Surgery Population as Determined by the Direct Reduction of Topography Measured Astigmatism.Clinical ophthalmology (Auckland, N.Z.) · 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
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo determine the main sources of ocular residual astigmatism (ORA) and to quantify the contribution of posterior corneal astigmatism (PCA) to ORA.
methodsThis cross-sectional study was conducted on 177 right eyes of 177 patients. Anterior corneal astigmatism (ACA) and PCA were obtained from Pentacam. ORA was calculated by the vector difference between refractive astigmatism (RA) and ACA. The Pearson correlation coefficient was employed to assess relationships between variables, and the contribution of PCA to ORA was assessed using a physical method.
resultsThe mean magnitude of PCA was 0.40 ± 0.15 D (range 0.10-0.70 D), while the mean ORA was 0.69 ± 0.33 D (range 0.05-1.63 D). There was a statistically significant correlation between the magnitudes of PCA and ORA (r = 0.38, P < 0.001). PCA had a positive effect on ORA in 171 eyes (96.61%), with a mean contribution value (CV) of 0.37 ± 0.16 D (range 0.01-0.70 D). The against-the-rule PCA exhibited both positive and negative effects on with-the-rule and oblique ORA, whereas with-the-rule, against-the-rule, and oblique PCA all positively influenced against-the-rule ORA. In 85 eyes (49.71%), the CV exceeded half of the ORA magnitude. In a small subset of eyes, PCA had a negative effect on ORA, potentially exceeding its magnitude.
conclusionsApproximately half of the magnitude of ORA comes from PCA. The CV/ORA ratio may be used to personalize the surgical method proposed by Alpins, resulting in better outcomes.
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.