The invention provides an advantageous system and corresponding method for measuring a plurality of aspects of vision. It is a computer-implemented, user-interactive system which can be used by practitioners such as opticians to measure and assess a patient's visual acuity. It comprises a handheld computing device arranged and configured to present at least one optotype to a user (patient) within a gamified environment. This aspect of the invention provides the advantage that it is more easily used by certain types of patients, such as children, the elderly or those suffering from medical/clinical conditions who would typically struggle to use traditional measuring tools. In a preferred embodiment, the optotype has at least one characteristic selected to facilitate the measurement of at least one, or preferably at least two, aspects of visual function； and the invention is arranged to detect the user's response to the optotype to provide a measurement of at least one or at least two aspects of visual function. Advantageously, this can be achieved in one ‘sitting’. The plurality of aspects of visual function can include visual acuity, central visual field, contrast sensitivity, stereopsis and/or colour vision, detection acuity of vision, resolution acuity of vision (spatial resolution or identification of static of dynamic directionality), recognition acuity of vision, hyperacuity of vision, temporal acuity of vision, spectral acuity of vision. The at least one optotype is repeatedly presented to the user, and the at least one characteristic is altered upon each repetition. The repetition may continue until a threshold or limit is reached. The at least one characteristic relates to the level of detail, contrast, colour, position or movement of the at least one optotype.L'invention concerne un système avantageux et un procédé correspondant pour mesurer une pluralité d'aspects de la vision. Il s'agit d'un système interactif avec l'utilisateur, mis en oeuvre par ordinat
