Systematic Assessment of Clinical Methods to Diagnose and Monitor Diabetic Retinal Neuropathy

Figure 3

Number of studies of pre- and early diabetic retinopathy-detecting electrophysiology modalities, with each modality further sorted by number of studies at each relative strength of evidence. OPs have the greatest number of studies citing this test as evidence of retinal damage at 30, followed by ITs and mfERGs at 29 each. Proportionally, mfERG has the greatest amount of compelling evidence for retinal damage secondary to diabetes.