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Community-based screening programs have had limited success in preventing vision loss from glaucoma due to overall low prevalence of glaucoma, screening limitations, and barriers to follow-up appointments. This editorial highlights lessons learned from 2 large prospective trials: the Philadelphia Telemedicine Glaucoma Detection and Follow-up Study and the Screening To Prevent Glaucoma Study. While some lessons are specific to ophthalmology, many lessons are applicable to screening for asymptomatic diseases in underserved, vulnerable communities.
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