Reading performance in glaucoma.

In clinical setting, visual field is the most important functional measure for staging and monitoring progression of disease. However, visual field poorly reflects the impact of glaucoma on daily activities. Weak associations have been reported between various visual field measures and visual disability using different questionnaires [1,2]. Selfperceived visual disability is a subjective measure and is influenced by other factors such as co-morbidities, personality type, gender, social and educational level, and use of topical medication [3-5]. Therefore, measuring task performance may represent a more objective measure to understand how glaucoma affects daily activities.