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Related Experiment Video

Updated: Jan 19, 2026

The Measurement and Treatment of Suppression in Amblyopia
08:34

The Measurement and Treatment of Suppression in Amblyopia

Published on: December 14, 2012

50.6K

How Many Plusoptix S04 Measures Yield the Most Sensitive Amblyopia Screening?

Sandra Guimarães, Andreia Soares, Patrício Costa

    Journal of Pediatric Ophthalmology and Strabismus
    |September 24, 2019
    PubMed
    Summary

    The Plusoptix S04 effectively predicts amblyopia in young children, with astigmatism and aniso-sphere being key indicators. Non-measurable results indicate a high likelihood of amblyopia, requiring careful consideration in screening.

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    Area of Science:

    • Ophthalmology
    • Pediatric eye care
    • Vision screening technologies

    Background:

    • Amblyopia, or "lazy eye," affects visual development and requires early detection.
    • The Plusoptix S04 is a non-invasive device used for amblyopia screening in children.
    • Accurate prediction models are crucial for efficient and effective vision screening programs.

    Purpose of the Study:

    • To evaluate the predictive capability of the Plusoptix S04 device for amblyopia in preschool-aged children.
    • To analyze various measurement models derived from the Plusoptix S04 data for amblyopia prediction.
    • To identify key refractive error components that contribute to amblyopia prediction using this technology.

    Main Methods:

    • A population-based screening of 1,547 children aged 3-4 years was conducted.
    • The Plusoptix S04 was used for binocular eye examinations, with three consecutive measurements taken.
    • Seven predictive models were developed, including single, mean, and maximal values from one, two, or three measurements.

    Main Results:

    • All developed models demonstrated significant prediction of amblyopia (P < .001).
    • Astigmatism (OR = 2.1-3.6) and aniso-sphere (OR = 3.6-9.0) were significant predictors.
    • Non-measurable results, particularly "hyper," indicated a high probability of amblyopia (100x higher likelihood).

    Conclusions:

    • The Plusoptix S04 is a valuable tool for amblyopia prediction, with non-measurable results being critical indicators.
    • While the device shows high sensitivity, it refers a significant percentage of children for further evaluation (>20%).
    • A single measurement may suffice, as additional measurements did not significantly improve prediction and could introduce accommodation-related false negatives.