A digital measurement system and method for optical applications including a mobile client device having a digital camera and an audio port, and a laser measurement device having a laser. The laser measurement device connected to the mobile client device and electrically connected to the audio port of the mobile client device. The mobile client device is configured to activate the laser at the same time as the digital camera is activated, and capture an image of a patient. The mobile client device is configured to access a measurement module to calculate position of wear measurements based on a location of a laser mark in the captured image.
