Shroff S, Gu SZ, Vardhan SA, et al. - Researchers conducted the study for reporting the outcomes of a glaucoma screening campaign targeting first-degree relatives of glaucoma patients in South India. By mail or letter and phone call, 1,598 glaucoma patients were approached and asked to bring their siblings and children to a glaucoma screening. Candidates underwent standardised eye examinations and completed questionnaires that evaluated barriers to participation and awareness of glaucoma risk. Two hundred six probands (12.9%) attended the screening along with 50 siblings and children. Probands were almost double as likely to attend if they had been contacted by both letter and phone call rather than letter only. INR2422 (£26) was the average cost per first-degree relative who was screened. In this glaucoma screening campaign, participation was low. Distance from the screening site and related indirect costs is the main obstacle to participation. Better strategies are required to bring first-degree relatives in for examinations.