Abstract
Purpose :
SpotTM Vision Screener (SVS) can perform a simultaneous binocular refractometry in a short time. Fujieda-city of Shizuoka Prefecture was the first city in Japan to introduce SVS to health examination for 3 year-old children (the health examination) since 2016. In this study, we report the usefulness of SVS and the refractive power of 3 year-old children in the health examination.
Methods :
The study targeted 1,219 children (Age:3 years and 1 month) who received the health examination in Fujieda-city from April 2016 to March 2017. We measured refractive power and pupil diameter, then conducted an eye position screening with using of SVS. According to the criteria defined by Fujieda-city, we extracted the children with a requirement of detailed examination, and analyzed the number, the refractive power for right eye, and the distribution of the pupil diameter.
Results :
We were able to measure 1,217 out of 1,219 children (99.8%) with SVS. We found in total of 71 children (5.8%) who required detailed examination; 61 children with a suspicion of refractive error (5.0%), 6 children with a suspicion of abnormal eye position (0.5%), and 4 children with a suspicion of both refractive error and abnormal eye position (0.3%). Regarding to refractive error, we found 32 children (52 eyes) for hyperopia with over 2.00 D, 44 children (56 eyes) for astigmatism with over 2.00 D, 3 children (4 eyes) for myopia with over 1.50 D, and 12 children for anisometropia with over 2.00 D. For 1,207 children excluding the cases with a suspicion of abnormal eye position, we confirmed that +0.70±0.55 (median +0.75, D) for right eye’s spherical power (mean±standard deviation), -0.67±0.49 (median -0.5, D) for cylindrical power, and 5.57±0.79 (median 5.6, mm) for pupil diameter. Spherical, cylinder power, and pupil diameter didn’t follow the normal distribution (Kolmogorov-Smirnov test, p<0.01).
Conclusions :
Because the measurable rate for SVS in the health examination was 99.8%, we could obtain a large number of basic data for Japanese children (Age:3 years and 1 month). Spherical power, cylinder power, and pupil size did not follow the normal distribution. As a result of the screening by SVS, 5.8% of children required detailed examination due to refractive error and abnormal eye position.
This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.