Figure 2.

Methodology for identifying lapses in diabetic retinopathy care in the electronic health record (EHR). After the initial cohort selection, the ophthalmology office visits related to diabetic retinopathy screening and treatment were isolated (step A), the providers’ recommended follow-up timeframe was identified (step B), the time to the patient’s next office visit was calculated (step C), and the thresholds for defining lapses in diabetic retinopathy care were applied (final). A sample patient’s timeline of different office visits in the EHR is shown on the right with examples of which visits were considered to have lapses in diabetic retinopathy care.