ArticleClinical ophthalmology (Auckland, N.Z.)2024
The Effect of Prism Presentation Order on Near Vertical Fusional Vergence Ranges of Normal Young Adults.
Article in Clinical ophthalmology (Auckland, N.Z.), 2024. 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.
- Does Stimulation of Plantar Mechanoreceptors Alter Visual Spatial Localization?Journal of functional morphology and kinesiology · 2026Article
- Comparison of binocular vision indices in Parkinson's disease patientsInternational journal of ophthalmology · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: Fusional vergence ranges (FVR) quantify the oculomotor system's ability to overcome heterophoria, playing a critical role in diagnosis and treatment. This study investigated the effect of prism order on near vertical FVR using the smooth and step methods. Methods: Normal participants were randomly assigned to either the smooth or step testing method and to Base-Up (BU, infravergence) first or Base Down (BD, supravergence) first prism type. After an hour, they crossed over to the alternative testing method and prism-type. The mean of two consecutive measurements of break and recovery values for one eye in each of the 16 experimental conditions were compared using the Friedman test with post-hoc Bonferroni correction, and non-parametric Bland and Altman analysis. Results: The mean break/recovery values of 27 participants (mean age: 22.5±2.0, range: 20-29, 20 female) when BU or BD were measured first were BU: 4.20±1.15 Conclusion: Unlike horizontal FVR, prism order does not affect near vertical FVR using the smooth and step. This simplifies clinical assessment and suggests that horizontal and vertical fusion systems may be treated as separate entities.
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.