Fig. 2From: The Quality of Life Impact Refractive Correction (QIRC) questionnaire: validation of the Malay-translated version of the QIRC using Rasch analysisCategory probability curve for the functional scale of the Final Malay QIRC. Red = Category 1 (not at all/never); Blue = Category 2 (little/occasionally); Black = Category 3, (a lot/very often); Green = Category 4 (always/extremely)Back to article page