Abstract: A system and method for dynamically a visual function of a subject are provided where the system and method account for fixation eye movement(s); saccade eye movement (s); smooth pursuit eye movement(s); optokinetic nystagmus eye movement(s); and/or blink eye movement, the system for dynamically assessing a visual function of a subject is provided, comprising: i) a visual display; ii) an eye-tracking device configured to detect a gaze position of at least one eye of the subject; and updating in real time the appearance of a first stimulus to provide a second stimulus based on at least on of the updated evidence-of-visibility score and the updated evidence-of-trackability score for the first visual stimulus.

Abstract: A system and method for dynamically assessing a visual function of a subject are provided where the system and method account for fixation eye movement(s); saccade eye movement(s); smooth pursuit eye movement(s); optokinetic nystagmus eye movement(s); and/or blink eye movement, the system for dynamically assessing a visual function of a subject is provided, comprising: i) a visual display; ii) an eye-tracking device configured to detect a gaze position of at least one eye of the subject; and updating in real time the appearance of a first stimulus to provide a second stimulus based on at least one of the updated evidence-of-visibility score and the updated evidence-of-trackability score for the first visual stimulus.

Abstract: Methods, systems and devices for determining contrast sensitivity function in a subject without requiring perceptual report by the subject.

Abstract: Methods, systems and devices for determining contrast sensitivity function in a subject without requiring perceptual report by the subject.

Abstract: Contrast sensitivity is an informative measure of visual function, but current tools for assessing it are limited by the attentional, motor, and communicative abilities of the participant. These participants are often less able to engage with psychophysical tasks or follow an experiment's instructions, and alternative approaches have disadvantages that limit their usefulness in clinical settings. Here, we describe an efficient new measure of contrast sensitivity—‘Curveball’—that continuously infers stimulus visibility through smooth eye tracking instead of perceptual report. The procedure rapidly lowers stimulus contrast in real time until the threshold is found. The task is repeatable, well-correlated with results from conventional psychophysical methods, and sensitive to improvements in visual acuity from refractive correction.