A visual function adjustment method and apparatus, and a virtual reality head-mount display device. The method comprises: respectively performing imaging in both eyes of a user so as to respectively display corresponding preset images in corresponding localized areas of the eyes, and enabling a present time interval α to be provided between the respective imaging times of the corresponding preset images in the eyes, wherein each localized area corresponds to a localized retinal injury of one of the eyes; and the imaging time of one preset image in the corresponding eye with the localized retinal injury is earlier than the imaging time of the present image in the other eye by the time interval α.

Computer-implemented system and method that allows for the rehabilitation of individuals with strabismus by leveraging commercially available VR headset technology. Eye tracking capabilities and external cameras of existing VR headsets, enables the system and method to first gather the image that the dominant, unaffected eye is focused on (FIG. 1). Then, given where the strabismus unaffected eye's gaze falls on its screen, the system and method will take the image and identify where that point lies on the strabismus affected eye's screen. This point is the ideal gaze point of the strabismus affected eye. The software solution disclosed herein will then warp the strabismus affected eye's screen so that this new gaze will line up with the unaffected eye's gaze.

Exemplary embodiments of the present disclosure relate to systems, methods, and apparatus to objectively assess binocular dysfunction for screening, diagnoses, and evaluation of vision/oculomotor function before, during, and after various forms of therapeutic interventions. Systems and methods of the present disclosure diagnose and assess binocular dysfunction objectively and automatically, can render a visual stimulus on one or more displays, and can control accommodative and proximal vergence stimulation of a user's eyes.

An apparatus for screening, treatment, monitoring and/or assessment of visual impairments, comprising electronic means for simultaneously applying two separate and unrelated processing methods to images presented to a patient's eyes: a first processing method being applied to an non-amblyopic eye (the eye with the better vision), and a second processing method being applied to an amblyopic eye (the weaker eye, or the impaired eye). A method for screening, treatment, monitoring and/or assessment of visual impairments, comprising: a. defining a starting point, wherein differences between a patient's eyes are completely, or as closely as practically possible, corrected, to enable two identical or similar images to be transferred to the brain from the patient's eyes; b. defining an ending point, wherein there is no correction applied to any of the patient's eyes; c. defining a screening, treatment, monitoring and/or assessment plan, for initially applying correction to images according to the starting point, then gradually reducing the correction, at a controlled and predetermined rate, towards the ending point; and d. applying the plan to images presented to the patient's eyes, while monitoring patient's performance.

Approaches for implementing therapeutic activities comprising visual challenges and tasks for improving visual acuity and stereoscopic acuity for management of binocular vision disorders are described. In an example, the computing device may generate two sets of visual elements with different visual characteristics, with each set corresponding to each eye of the user. The visual elements may be displayed based on values of element attributes such as contrast, size, spatial frequency and speed. The user may then be prompted to provide a response. Based on received user's response, the element attributes may be modified, and new sets of visual elements may be displayed. In another example, visual elements with two images separated by a certain offset may be displayed. The user may be prompted to provide a response. Based on user's response, the offset value of one of the visual elements may be modified and modified visual elements may be displayed.

Photo-stress by focal light bleaches the retina and temporarily reduced retinal function. Recovery from suppression is measurable by monocular and binocular endpoints, when recovery is prolonged a disease is suspected. The monocular endpoint is the moment the dark central afterimage representing the macula becomes the same brightness as the peripheral ring representing unstimulated retina and the binocular endpoint is brightness equality of rivalrous stimuli. Four embodiments are described for measuring relative brightness sense photo-stress utilizing monocular and binocular methodology.

Active amblyopia therapy is described in this invention where the child actively participates in treatment by viewing binocular stereo image pairs in a game like experience. A method for easily measuring the amblyopic defect prior to each therapy session to validate the progress of therapy is disclosed. Therapy is provided in two embodiments viewable on graphic display devices. My first embodiment controls dominance by switching suppression between the eyes with adjustments in the rivalrous brightness balance. My second embodiment stimulates binocular pathways in both eyes using primeval motion in depth pathways where time delay between stereo images in motion produce insuppressible three dimensional effects.

An apparatus for modifying the visual input to the brain from a non-dominant eye is provided. The apparatus includes an electrically controllable optical window that is coupled with a controller. The controller is positioned to establish a voltage across the electrically controllable optical window, remove a voltage across the electrically controllable optical window, vary a voltage across the electrically controllable optical window, or combinations thereof. The optical transparency of the electrically controllable optical window is responsive to voltage across the electrically controllable optical window.

A method of improving stereopsis and devices for improving stereopsis in a patient, including facilitating development of a new stereo preferred retinal locus by presenting the patient with dichoptic images that require simultaneous use of both eyes to accomplish a visual task.

An apparatus for screening, treatment, monitoring and/or assessment of visual impairments, comprising electronic means for simultaneously applying two separate and unrelated processing methods to images presented to a patient's eyes: a first processing method being applied to an non-amblyopic eye (the eye with the better vision), and a second processing method being applied to an amblyopic eye (the weaker eye, or the impaired eye). A method for screening, treatment, monitoring and/or assessment of visual impairments, comprising: a. defining a starting point, wherein differences between a patient's eyes are completely, or as closely as practically possible, corrected, to enable two identical or similar images to be transferred to the brain from the patient's eyes; b. defining an ending point, wherein there is no correction applied to any of the patient's eyes; c. defining a screening, treatment, monitoring and/or assessment plan, for initially applying correction to images according to the starting point, then gradually reducing the correction, at a controlled and predetermined rate, towards the ending point; and d. applying the plan to images presented to the patient's eyes, while monitoring patient's performance.