#$%^&*AU2020202945B120200820.pdf#####ABSTRACT In one embodiment, an optical trial frame is provided. The trial frame includes: left and right frames extending in the left and right directions respectively； a bridge located between and connected to the left and right frames such that the left and right frames can move relative to each other along a longitudinal axis of the bridge； left and right temples connected to the respective left and right frames； left and right lens holders rotatably coupled to the left and right frames respectively and configured to receive and retain lenses in use； and, capacitive sensing means configured to detect and measure at least one of: a lateral position of one of the frames； and, a rotational position of one of the lens holders. FIGURE 1 22
