[Assessment of the use of retinography as a screening method for the early diagnosis of chronic glaucoma in Primary Care: Validation for screening in populations with open-angle glaucoma risk factors].

Objective: The aim of this study is to determine usefulness, validity of retinographies performed in Primary Care as a tool for early diagnosis of open-angle chronic glaucoma (OAG).

Design: An observational, descriptive and cross-sectional study with two blinded parallel observers: 2 general practitioners and 1 ophthalmologist.

Location: Urban Primary Care Health Centre, and the Ophthalmology Department outpatient clinic.