Vision Impairment, Ocular Conditions, and Vision-specific Function: The Singapore Malay Eye Study

Abstract

Objective: To validate the VF-11, a vision-specific function scale and determine the relationship among vision impairment, ocular conditions, and vision-specific functioning in an Asian Malay population. Design: Population-based cross-sectional study. Participants: Persons aged 40 to 80 years of Malay ethnicity in Singapore. Methods: Of the 3280 participants, 3267 answered the VF-11 scale. Participants underwent an extensive and standardized examination procedure, which included visual acuity testing. Sociodemographic and medical data were recorded using a standardized questionnaire. Rasch analysis was initially used to validate the VF-11 and determine its measurement characteristics. Analys..