Children were classified as being fully treated in their glasses or needing further intervention to treat their amblyopia and / or strabismus. Further treatment was indicated if children were found to have abnormal alignment and / or best corrected visual acuity of 20 / 40 or worse in either eye with correction. Photoscreening results for these children demonstrated a sensitivity, specificity, false negative rate and false positive rate of 69%, 84%, 31%, and 16%, respectively