A mains electricity (AC-powered), ophthalmic device designed to use ultrasound to measure the thickness of the cornea, and may in addition be designed to measure axial length and anterior chamber depth. A small ultrasound probe(s) that is connected to this device is placed directly onto the cornea to make the measurements which are recorded and displayed by the pachymeter. The data is used to evaluate refractive eye surgery [e.g., laser assisted in situ keratomileusis (LASIK) treatment], evaluate ocular measurements for calculating intraocular lens power, monitor epithelium regrowth, and for other ophthalmic measurement evaluations.