A mains electricity (AC-powered) ophthalmic device (a biometer) designed to determine the axial dimensions and frontal section of the eye including other biometric parameters/evaluations such as keratometry, white-to-white distance, pupillometry and consequently corneal power based on optical low coherence reflectometry (OLCR), non contact, measurement methods using light markers and digital image processing. It is normally adjustable on a cross stage with an integral chin rest and used to obtain measurements directly from the eye for processing and display via software, e.g., in an attached computer. Patient intraocular lens (IOL) suitability may also be calculated using different formulae.