**2.13 Contact lens impact on Quality of life (CLIQ )**

It is a questionnaire containing 28 items. It is based on Rasch analysis and shows good validity and reliability. Boer suggested that the psychometric properties of CLIQ were of high quality [22].

It is important to emphasize that these Questionnaires are not diagnostic tool, however can give a good clinical assessment of the problem. It acts as preliminary tool of assessment and is meant for screening purposes. Proper diagnosis requires a battery of additional tests. These above questionnaires act as adjunct to the clinical tests and cannot replace them in any form.
