Fig. 1From: Challenges, facilitators and barriers to screening study participants in early disease stages-experience from the MACUSTAR studyParticipants screened and participants eligible for the MACUSTAR study with intermediate age-related macular degeneration as well as number of active sites and factors impacting screenings, displayed per week since start of recruitment at the first study site (80% target reached refers to individual clinical sites; all other factors are global). The blue curves represent cumulative numbers; the grey curve represents numbers per weekBack to article page