New vessels detected on wide-field imaging compared to two-field and seven-field imaging: implications for diabetic retinopathy screening image analysis

摘要

Introduction Wide-field retinal imaging (Optomap), used for detecting diabetic retinopathy (DR), has been shown to compare well with seven-field early treatment diabetic retinopathy study (ETDRS) photographs. An Optomap 200 image covers 80% of the retinal surface, compared with the standard seven-field, 30 images, covering 30% of the retinal surface. In England, DR screening is performed by grading two, 45 images per eye, by the DR screening service (DRSS).