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Updated: Jul 14, 2026
A Method to Quantify Visual Information Processing in Children Using Eye Tracking
Published on: July 9, 2016
Validity and reliability of the Children's Visual Function Questionnaire (CVFQ)
Eileen E Birch1, Christina S Cheng, Joost Felius
1Retina Foundation of the Southwest, Dallas, TX 75231, USA. ebirch@retinafoundation.org
Insights
The Children's Visual Function Questionnaire (CVFQ) effectively measures quality of life in pediatric eye conditions. Its subscales sensitively detect differences in visual function across various patient groups and treatment types.
Area of Science:
- Ophthalmology
- Pediatric Optometry
- Quality of Life Research
Background:
- The Children's Visual Function Questionnaire (CVFQ) is a validated tool for assessing vision-specific quality of life in children up to age 7.
- Assessing construct validity is crucial for ensuring the CVFQ accurately reflects patient experiences in clinical trials.
Purpose of the Study:
- To evaluate the construct validity of CVFQ subscales.
- To determine the sensitivity of CVFQ subscales to common research questions in pediatric ophthalmic clinical trials.
Main Methods:
- Compared CVFQ subscale scores (Competence, Personality, Family Impact, Treatment Difficulty) across different pediatric patient groups.
- Groups included children with unilateral vs. bilateral cataracts, varying severity of retinopathy of prematurity (ROP), and different treatment regimens (optical, surgery, occlusion).
Main Results:
- Children with bilateral cataracts and severe ROP showed significantly worse Competence scores.
- Treatment Difficulty and Family Impact scores were higher for unilateral cataracts and certain treatments like occlusion or aphakic contact lenses.
- CVFQ subscales demonstrated significant differences correlating with disease laterality, severity, and treatment complexity.
Conclusions:
- The CVFQ subscales are sensitive to meaningful differences in quality of life among pediatric ophthalmic patient groups.
- The findings support the CVFQ's utility in capturing key outcomes in ophthalmic clinical research for children.
Purpose:
The Children's Visual Function Questionnaire (CVFQ) is a vision-specific quality-of-life instrument designed for use with children up to 7 years of age. The goal of this study was to assess the construct validity of CVFQ subscales by examining their sensitivity to four research questions commonly posed in ophthalmic clinical trials.
Methods:
CVFQ Competence, Personality, Family Impact, and Treatment Difficulty subscale scores were compared for groups of pediatric patients with unilateral versus bilateral disease (35 bilateral and 38 unilateral cataract), different severity of visual impairment (61 retinopathy of prematurity [ROP] grouped by acuity), difficulty of treatment regimen (22 optical, 44 surgery, 38 surgery with optical, and 35 surgery with optical and occlusion), and alternative treatments for the same condition (24 intraocular lenses, 37 aphakic contact lenses).
Results:
Patients treated for bilateral cataracts had significantly worse Competence subscale scores than patients treated for unilateral cataract, and patients with bilateral severe ROP (visual acuity 20/200 or poorer in both eyes) had significantly worse Competence subscale scores than other patients with ROP. Treatment Difficulty subscale scores were worse for patients with unilateral cataracts than for those with bilateral cataracts, worse for patients treated with occlusion therapy than for those treated with surgery or optical correction, and worse for those treated with an aphakic contact lens than for those treated with an intraocular lens. Family Impact subscale scores were worse for patients with unilateral cataracts than for those with bilateral cataracts, worse for patients treated with surgery than for those treated with optical correction, and worse for those with severe bilateral ROP than for any other patients with ROP.
Conclusions:
The CVFQ subscales quantified meaningful differences among pediatric patient groups who were chosen to address key research questions commonly posed in ophthalmic clinical trials.
