Validity of the Visual Function Index (VF-14) in Patients With Retinal Disease

Abstract

SNELLEN VISUAL acuity is the most widely used measure of visual function. Other measures, including contrast sensitivity,^1,2 visual field,^1,3,4 and glare testing,^1,2 have demonstrated that visual acuity is a descriptor of a single aspect of vision rather than a comprehensive assessment of visual function. An approach that is gaining popularity is the use of standardized vision-related quality-of-life instruments to measure the functional visual status of patients. This variable may be used with other vision descriptors to monitor individual patient progress in clinical settings and clinical trials. Several such instruments have been developed.^5-7