Abstract
Purpose :
The spot vision screener (SVS) is a refraction test useful for early detection of amblyopia and strabismus. SVS is becoming more widespread in Three-Year-Old Health Screening Program (VTYOS) in Japan. The purpose of this study was to evaluate the results and efficiency of the SVS in the Visual examination in VTYOS in Ota Ward, Tokyo.
Methods :
The subjects were 136 children (68 boys) whose consent was obtained among those whose VTYOS was found to be abnormal and required to be referred for comprehensive examination in Ota Ward, Tokyo from July 2022 to April 2023. Screening was performed by home vision test results (< logMAR0.3), questionnaires, and SVS. The breakdown of diseases showing SVS abnormalities, the content of false positives, and the positive predictive value (PPV) were evaluated.
Results :
Of the 136 children with abnormalities detected on VTYOS, 105 (77.2%) were determined to require comprehensive testing through SVS-based screening. Of the 136 patients who underwent comprehensive testing, 33% were normal, 33% had suspected amblyopia, and 34% were initiating amblyopia treatment. Most false positives were for strabismus (62%), followed by astigmatism (31%). Of the cases that required amblyopia treatment, astigmatism (59%), strabismus (17%), and hyperopia (17%) were the most common. The PPV of the conventional method before the introduction of SVS in our previous report was 40%, whereas the PPV of the current method after the introduction of SVS in the present study increased to 67.0%.
Conclusions :
Screening using SVS leads to early detection and early treatment of amblyopia and strabismus.
This abstract was presented at the 2024 ARVO Annual Meeting, held in Seattle, WA, May 5-9, 2024.