System and method for modifying image enhancement parameters for a portable display

A smart glass system (10) arranged to permit a visually impaired user to modify one or more control parameters of an image provided by the system (10) according to their eye condition, comprising: a portable computing device (100) comprising a motion sensor; a smart glass based wearable device(160) comprising a display portion (162), the display portion being provided in a field of view of the user; and an image capture device (163), wherein the portable computing device (100) is operatively coupled with the smart glass based wearable device (160), the system (10) being configured to display on the display portion (162) an image corresponding to at least a portion of an image captured by the image capture device (163), wherein the system (10) is configured to detect rotational movement of the portable computing device (100) in the hand of the user by means of the motion sensor (102), wherein one or more control parameters of the image that is displayed on the wearable device (160) are modified based on the rotational movement of the portable computing device (100).