This questionnaire is designed to measure change in satisfaction with treatment for diabetic retinopathy. RetTSQ change version (RetTSQc) is used together with the status version (RetTSQs) to overcome potential ceiling effects which may limit improvements when the RetTSQs is used alone. This questionnaire has 14 questions. For languages and countries available, please click here.
Instructions can be adjusted to suit timing of administration. The RetTSQc is not used on its own - it should be used with the RetTSQs.