Related Experiment Video
Updated: Jun 23, 2025
Subjective Refraction Test Using a Smartphone for Vision Screening
Published on: October 18, 2024
Development and validation of a novel questionnaire regarding vision screening among preschool teachers in Malaysia
Shazrina Ariffin1, Saadah Mohamed Akhir1, Sumithira Narayanasamy1
1Faculty of Health Sciences, Centre for Community Health Studies (ReaCH), Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia.
Aim:
To develop and evaluate the validity and reliability of a knowledge, attitude, and practice questionnaire related to vision screening (KAP-VST) among preschool teachers in Malaysia.
Methods:
The questionnaire was developed through a literature review and discussions with experts. Content and face validation were conducted by a panel of experts (n=10) and preschool teachers (n=10), respectively. A pilot study was conducted for construct validation (n=161) and test-retest reliability (n=60) of the newly developed questionnaire.
Results:
Based on the content and face validation, 71 items were generated, and 68 items were selected after exploratory factor analysis. The content validity index for items (I-CVI) score ranged from 0.8-1.0, and the content validity index for scale (S-CVI)/Ave was 0.99. Internal consistency was KR20=0.93 for knowledge, Cronbach's alpha=0.758 for attitude, and Cronbach's alpha=0.856 for practice.
Conclusion:
The KAP-VST is a valid and reliable instrument for assessing knowledge, attitude, and practice in relation to vision screening among preschool teachers in Malaysia.
