Klinische Studien
Nachfolgend finden Sie einige Studien, die mit dem Vorgängermodel des Pediatric Autorefracotrs, dem plusoptiX S04, durchgeführt wurden.
"Results: [...] By using these results as our standard, we calculated that the plusoptiX S04 photoscreener offered a sensitivity of 99%, specificity of 82%, false-positive rate of 18%, and false-negative rate of 1.2 %".
"Conclusions: [...] Sensitivity and specitivity suggests that testing the plusoptiX S04 for applications in a general screening environment should be considered."
"Results: [...] The plusoptiX demonstrated a sensitivity of 98.9%, specificity of 96.1%, false-positive rate of 3.7%, false-negative rate of 1.0 %, and positive predictive value of 97,9%".
"Conclusion: The MTI and the plusoptiX photoscreeners proved to be effective when compared with a comprehensive cycloplegic pediatric ophthalmic examination. The plusoptiX, however, was found to have a higher sensitivity and specitivity than the MTI."
"Zusammenfassung: In einer einfachen Studie, [...], werden 100 Kinder zwischen dem 3. und 4. Lebensjahr in der pädiatrischen Praxis einem Augenfunktions-Screening unterzogen. 7% der untersuchten Kinder hatten eine Amblyopie. Die Resultate zeigen, dass unter Berücksichtigung eines zumutbaren Aufwandes die zu erwartende Zahl von ca. 5-10% der Schwachsichtigen sicher erfasst und einer frühen Therapie zugeführt werden kann. «Objektive Screening-Vorsorgeuntersuchungen» der Augenfunktion bei Kleinkindern können zu einer erheblichen Verbesserung der Sehqualität im Kindes- und Erwachsenenalter beitragen."
"Results: Sensitivity in detecting amblyopiogenic factors was 83%, specificity was 94%".
"[...] children were [...] by assistants from a local Public Health Unit."
"The accuracy of the PlusoptiX SO4 camera in detecting amblyopiogenic factors appears sufficiently high to consider its further deployment in a widespread school screening program."
"Results: The PlusOptix vision screener [...] with sensitivity and specificity [...] were 98%, 88% [...]."
"The PlusOptix vision screener is a useful tool for the detection of amblyopia risk factors in pediatric populations."
"The PlusOptix vision screener provides an accurate, fast, user-friendly, and portable way to detect amblyopia risk factors. Because the software automatically evaluates the refractive error and ocular alignment and gives a simple referral grade, the PlusOptix screener may offer a reasonable way of providing large-scale vision screenings at relatively low costs."
"It is portable, user friendly, easy to use on children of all ages, and it rapidly measures and calculates
accurate and easily understandable data."
"Results: The estimated sensitivity and predictive value and speed of the objective photoscreeners exceed visual acuity testing. The PediaVision photoscreener, in addition, allowed a practical range of referral refractive criteria to be determined and utilized." (page 83)
"The estimated sensitivity/specificity [...] for PlusOptix 67%/94% [...]." (page 86)
"Since amblyopia is an evolving process for many children throughout the critical first decade, AAP does NOT recommend a single age-based vision screen or comprehensive examination, but rather an age-appropriate series of vision screening tests." (page 87)
"...the rapid computer interpretation with age-based, user definable referral criteria makes the PlusOptix S04 a most potent weapon against amblyopia for any program that can obtain them." (page 88)
“Conclusion: Even very young children do accomodate to the Visionscreener held at 1 m distance. Thresholds have to be adjusted to +1 dpt hyperopia for non-cycloplegic measurements in order to get sensitivity and specficity that are useful for mass screening. It is still open, whether these values have to be changed for general-population based amblyopia screening. A study that looks at a population seen by paediatricians is underway.”
“Der Vision Screener ist ein handgehaltenes Videorefraktometer, das zusätzlich binokular die Lage der Hornhautreflexe relativ zur Pupillenmitte anzeigt. Diese Information wird vom Gerät nur genutzt, um bei Augen, die um mehr als 10° von der Orthostellung abweichen, auf einen amblyogenen Faktor hinzuweisen.
Eine manuelle Auswertung des Hornhautreflexausdrucks von 116 orthotropen und 16 kleinwinklig schielenden Kindern (0.5-6 Jahre) ermöglichte zusätzlich mit einer Sensitivität von zirka 80% bei einer Spezifität von 95% kleinwinkliges Schielen von <10° zu erkennen.
Die subjektive Beurteilung des Fundusreflexes erlaubte bei allen 19 Kindern mit Medientrübung oder -unregelmäßigkeiten, diese zu erkennen.”