Comparing the features of the Cardiff Visual Ability Questionnaire for Children (CVAQC) with the other three questionnaires
| Description | CVAQC | IVI-C8 | LVP-FVQ7 | CVFQ6 |
| Age range (years) | 5–18 | 8–18 | 8–18 | Up to 7 |
| Basis of items development | Focus groups with children (VI and normally sighted) | Focus groups with VI children, parents, teachers and support providers | Literature review and focus groups with VI children, parents and support providers | Clinical experience and literature review |
| Population most suited to | Children in developed countries | Children in developing countries | ||
| Self reported/proxy | Self-reported | Not published | Self-reported | Proxy |
| Psychometric properties | Rasch analysis | Not published | Rasch analysis | Rasch analysis not used |
| Concept being measured | Visual ability | Vision related Quality of Life | Visual function | Vision related Quality of Life |
CVFQ, Children's Visual Function Questionnaire; IVI-C, Impact of Visual Impairment on Children; LVP-FVQ, LV Prasad-Functional Vision Questionnaire; VI, visually impaired.