An electrically-powered, hand-held, ophthalmic instrument designed to be held arm’s length from the patient to examine the interior of the eye and related structures [e.g., fundus (retina), cornea, aqueous, lens, vitreous] using the examiner’s one eye (monocular). It is intended to provide a wide field of view and produce an inverted (reversed) image of approximately 2 to 5 times magnification. It typically consists of a built-in light (e.g., non-polarized light) directed through the pupil to illuminate the interior of the eyeball, lenses, and filters.