An electrically-powered, ophthalmic, binocular microscope designed to examine the interior anatomy of the eye by viewing through the pupil; it is not dedicated to surgical procedures. It projects a narrow slit of light into the eye and resulting light reflections are detected obliquely with a travelling microscope to enable observation of the internal ocular structures. It is used to perform a variety of measurements [e.g., intraocular pressure (IOP) or tonometry, corneal thickness, anterior chamber depth] and to evaluate symptoms (e.g., eye itchiness, grittiness, pain, dry eyes, photophobia, and reduced visual acuity).