An electronic unit or device assembly intended to measure, record, and display a range of ophthalmic parameters associated with vision electrophysiology [e.g., electroretinogram (ERG), visual evoked potential (VEP), electrooculogram (EOG)], and/or psychophysical vision (e.g., visual acuity/fields, contrast sensitivity, colour perception), and/or eye movement (e.g., pupillary response, saccades, pursuits, fixations) for vision evaluation; it is neither intended to measure dimensional/ocular-shape parameters nor is it dedicated to neurological assessment. Features may include visual stimuli (e.g., light/image patterns) and/or sensing/tracking devices (e.g., bioelectric amplifiers, cameras).