Role of Electrophysiology in the Early Diagnosis and Follow-Up of Diabetic Retinopathy

Table 2

Standards for VEP assessment according to ISCEV.

	Field size (deg)	Stimulus type	Stimulation	Background luminance (cdm^−2)	Contrast (%)	Presentation rate
Pattern stimulation	>15	Pattern reversal or onset/offset	Monocular	—	>75	<1–3 reversals or ≤2 onsets per second
Flash stimulation	>20	Standard luminance flash (2.7–3.4 cdsm^−2)	Monocular (recommended)	15–30	—	<1.5 flashes per second