Plusoptix Vision Screener: the accuracy and repeatability of refractive measurements using a new autorefractor

Abstract

The PVS may underestimate children's refractive error.

Screening for amblyopia risk factors in pre-verbal children using the Plusoptix photoscreener: a cross-sectional population-based study

“…In the study of Dahlmann-Noor et al , the repeatability coefficient was about 0.6 D, although only 35% of retinoscopy and Plusoptix results were within ±1.0 D of each other (74% in our study) 5. This shows the good repeatability of the instrument.…”

“…Schimitzek and Lagrèze noted a 0.73 D shift to myopia due to uncontrolled accommodation 9. Dahlmann-Noor et al reported a myopic shift of 1.9 D 5. These findings show the possibility of uncontrolled accommodation in patients who were examined by the Plusoptix, which according to the findings of Schimitzek and Haase and of Schaeffel et al cannot be relieved by using cycloplegic drops or 3 D glasses 10 11.…”

Screening for refractive errors in children: The plusoptiX S08 and the Retinomax K-plus2 performed by a lay screener compared to cycloplegic retinoscopy

“…15,16,28,29 Several studies have compared agreement between the plusoptix and CR performed by an orthoptist or an ophthalmologist. 17,20,30 For reasons of cost-effectiveness, it would be preferable to screen large populations with lay screeners. In the present study, all measurements were made by 1 lay screener, but this was not possible for CR due to the complexity of the test.…”

Vision screening in children by Plusoptix Vision Screener compared with gold-standard orthoptic assessment

“…We attempted to reduce interobserver variability for the gold standard by performing the same battery of tests on all subjects and by following referral criteria laid down at the beginning of the study. As for the PVS, we determined intra- and interobserver variability of measurements as part of a separate study into device reliability and accuracy18 and can exclude any significant influence. Lastly, with view to the comparison of refractive data, our results are similar to those reported by other studies 19 – 21…”