Fig. 4
From: A smartphone ocular alignment measurement app in school screening for strabismus
A positive correlation was found between the deviation degree measured by the app and prism alternating cover test (R2 = 0.74, P < 0.001). The horizontal axis represents the deviation in prism diopters measured by PACT (prism alternating cover test). The vertical axis represents the deviation in prism diopters measured by the app. Positive values are esodeviation and negative values are exodeviation. There are a few data points which overlap