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  • Comparison of vision screeners

Comparison of vision screeners
Reviewed by Fiona Rowe

1 February 2014 | Fiona Rowe (Prof) | EYE - Paediatrics, EYE - Strabismus

The primary purpose of this study was to calibrate the various paediatric photoscreeners over a range of contact lens induced hyperopic and astigmatic anisometropia using the American Association of Paediatric Ophthalmology and Strabismus (AAPOS) criteria for anisometropic or axial astigmatism. They applied the AAPOS validation guidelines. Photoscreeners included Nikon retinomax, Suresight, MTI, Gateway DV-S20, Canon TXI, iphone 4S, Plusoptix S09, SPOT and iScreen 3000. All seven photoscreeners gave passing, normal results for emmetropia but referred both cases with contact lens induced anisometropic hypermetropia of 2D and 1.75D induced axial astigmatism. The photoscreen images, remote autorefractors and computer interpreted photoscreeners provide a near linear relationship between induced refractive error and DCC. Iphone, SPOT and iScreen over referred contact lens induced 1D spherical anisometropia. Remote autorefractors had low sensitivity at high specificity with VIPs criteria. All nine objective screeners provided results to sort cases with refractive error in the normal range from those with amblyogenic refractive errors. 

Calibration and validation of nine objective vision screeners with contact lens-induced anisometropia.
Arnold RW, Davis B, Arnold LE, et al.
JOURNAL OF PEDIATRIC OPHTHALMOLOGY AND STRABISMUS
2013;50:184-90.
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Fiona Rowe (Prof)
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Fiona Rowe (Prof)

Institute of Population Health, University of Liverpool, UK.

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