In certain embodiments, vision-related alerting may be facilitated based on a physical contact prediction. In some embodiments, a prediction indicating defective visual field portions of a user's visual field may be generated based on feedback related to a set of stimuli displayed to the user. The defective visual field portions may be visual field portions of the visual field that fail to satisfy one or more vision criteria. Based on the prediction of the defective visual field portions, a modified video stream derived from a live video stream to be presented via a wearable device. Activation of an alert may be caused via the wearable device based on (i) a prediction of physical contact (of an object with the user) and (ii) the object not being sufficiently in any image portion of the modified video stream that corresponds to at least one visual field portion satisfying the vision criteria.