The W.H.E.E.L.S. Preschool Vision Screening Program’s Initial Outcomes for 12,402 Children Screened Using the Plusoptix Photoscreener

Table 1

Vision screening referral parameters defined.

Referral diagnosis	Referral parameter
Anisometropia	Difference of 1.00 D or greater in spherical equivalents
Astigmatism	Cylinder of 1.50 D or greater
Myopia	Spherical equivalent of −0.75 D or greater
Hyperopia	Spherical equivalent of 2.50 D or greater
Anisocoria	1 mm or greater difference in pupil size
Gaze Asymmetry	10-degree difference or greater