“…The most commonly used tools were the Intermittent Exotropia Questionnaire (n ¼ 12), 30,36,38,40,45e49,52,53,55 the Pediatric QoL Inventory (n ¼ 11), 7,18e21,26,29,33,34,42,51 and the 25-item National Eye Institute Visual Function Questionnaire (n ¼ 7). 21,22,28,31,32,37,44 Other questionnaires included the RAND Health Insurance Study questionnaire, 43,54 the Pediatric Eye Questionnaire, 24,27 the World Health Organization QoL Scale, 25 the QoL Impact of Refractive Correction, 59 the scale of QoL for children with congenital bilateral cataract, 58 a self-developed questionnaire to assess the impact of amblyopia treatment on health-related QoL, 56 the Children's Visual Function Questionnaire, 23 the generic KINDL-R questionnaire, 35,39 the LV Prasad Functional Vision Questionnaire, 57 and the Low Vision QoL Questionnaire. 6 Nine of these instruments were condition specific and 4 were general.…”