Abstract: A system and method including receiving, via an interface, demographic information and behavioral information associated with a subject; determining an incidence factor for the subject by weighting, according to a predetermined incidence formula, the demographic information and the behavioral information, wherein the predetermined incidence formula and weighting is derived from incidence data associated with a population; determining a progression factor for the subject by weighting, according to a predetermined progression formula, the demographic information and the behavioral information, wherein the predetermined progression formula and weighting is derived from progression data associated with a population, and wherein the predetermined progression formula is a function of the incidence factor; predicting and calculating based on the incidence factor and the progression factor, a myopia risk metric indicative of risk of the subject exhibiting myopia; and outputting the myopia risk metric as a numerical c

Abstract: An apparatus to improve the operation of an autorefractor includes a first circuit to obtain objective refraction data and a second circuit to receive patient age data. An autorefractor output adjustment device is connected to the first circuit and the second circuit to combine the objective refraction data with a weight factor, which is assigned as a function of the patient age data and optometric clinical judgment, to obtain an eyeglass lens specification. The autorefractor output adjustment device may also rely upon eyeglass lens prescription data. The apparatus may be implemented in an autorefractor or it may be constructed as an external unit. The autorefractor output adjustment device may be implemented with a digital logic circuit executing a program or as a hardwired circuit.