Patent ID: 8596793

Claim:
A method for automatically adjusting one or more parameters of a display for a vision contrast test, comprising the following steps: a. continuously measuring an ambient illumination level in proximity to the display in real time prior to providing the vision contrast test; b. comparing the measured ambient illumination level against a first predetermined threshold level and providing a signal indicative of a quality of the measured ambient illumination level, where a positive signal is provided if the measured level is within the first predetermined threshold level or an intermediate signal is provided if the measured level is within a second predetermined threshold level or a negative signal is provided if the measured level is outside the second predetermined threshold level; c. requesting from a user whether a certified examination is desired if the negative signal is provided, where a positive response from the user terminates adjustment of the display and a negative response from the user initiates an adjustment of the display emission; and, d. if the negative response is received from the user, adjusting a brightness of the display, where the brightness is increased if the measured level is higher than the first predetermined threshold or the brightness is decreased if the measured level is lower than the first predetermined threshold.