The disclosure relates to a method and a respective computer program with a program code to execute the method. In particular, disclosed is a method for training a preferred retinal locus of fixation (efficient PRL) for a person having an eye with a field of vision comprising an area of partially diminished or entirely degenerated visual acuity. The method includes: a) determining an inefficient retinal region outside the area in the field of vision of the eye of the person and a more efficient retinal region for the specific vision task outside the area in the field of vision of the eye of the person and b) inducing a preferred retinal locus of fixation (efficient PRL) for a vision task outside the inefficient retinal region but in the more efficient retinal region. In addition, the disclosure relates to a device for performing the method.

The disclosure relates to a method and a respective computer program with a program code to execute the method. In particular, disclosed is a method for training a preferred retinal locus of fixation (efficient PRL) for a person having an eye with a field of vision comprising an area of partially diminished or entirely degenerated visual acuity. The method includes: a) determining an inefficient retinal region outside the area in the field of vision of the eye of the person and a more efficient retinal region for the specific vision task outside the area in the field of vision of the eye of the person and b) inducing a preferred retinal locus of fixation (efficient PRL) for a vision task outside the inefficient retinal region but in the more efficient retinal region. In addition, the disclosure relates to a device for performing the method.

A display method and a display system for an anti-dizziness reference image are provided. The display system includes a display, a range extraction unit, an information analyzing unit, an object analyzing unit and an image setting unit. The display is used to display the anti-dizziness reference image. The range extraction unit is used to obtain a gaze background range of a user. The image setting unit is used to set an image hue, an image lightness, an image brightness, an image content or an ambient lighting display content of the anti-dizziness reference image according to a background hue information, a background lightness information, a background brightness information, or a road information of the gaze background range; or set an image ratio between the anti-dizziness reference image and a display area of the display according to an object distance or an object area of the watched object.

A display method and a display system for an anti-dizziness reference image are provided. The display system includes a display, a range extraction unit, an information analyzing unit, an object analyzing unit and an image setting unit. The display is used to display the anti-dizziness reference image. The range extraction unit is used to obtain a gaze background range of a user. The image setting unit is used to set an image hue, an image lightness, an image brightness, an image content or an ambient lighting display content of the anti-dizziness reference image according to a background hue information, a background lightness information, a background brightness information, or a road information of the gaze background range; or set an image ratio between the anti-dizziness reference image and a display area of the display according to an object distance or an object area of the watched object.

Exemplary light control devices and methods provide a regional variation of visual information and sampling (“V-VIS”) of an ocular field of view that improves or stabilizes vision, ameliorates a visual symptom, reduces the rate of vision loss, or reduces the progression of an ophthalmic or neurologic condition, disease, injury or disorder. The V-VIS devices and methods generate a moving aperture effect anterior to a retina that samples and delivers to the retina environmental light from an ocular field of view at a sampling rate between 50 hertz and 50 kilohertz. Certain of these V-VIS devices and methods may be combined with augmented or virtual reality, vision measurement, vision monitoring, or other therapies including, but not limited to, pharmacological, gene, retinal replacement and stem cell therapies.

An apparatus to treat refractive error of the eye comprises one or more optics configured to project stimuli comprising out of focus images onto the peripheral retina outside the macula. While the stimuli can be configured in many ways, in some embodiments the stimuli are arranged to decrease interference with central vison such as macular vision. The stimuli can be out of focus images may comprise an amount of defocus within a range from about 3 Diopters (“D”) to about 6 D. In some embodiments, the brightness of the stimuli is greater than a brightness of background illumination by an appropriate amount such as at least 3 times the background brightness. In some embodiments, each of a plurality of stimuli comprises a spatial frequency distribution with an amplitude profile having spatial frequencies within a range from about range of 1×10.sup.−1 to 2.5×10.sup.1 cycles per degree.

A vision training device includes a main body, a lens unit, a drive motor, and a controller. The lens unit includes a plurality of lenses respectively having different diopter values and a lens holder that supports the lenses. The drive motor moves the lens holder so that one of the lenses of the lens unit is disposed on a line of sight axis. The controller controls the drive motor such that a test lens selected from the plurality of lenses is disposed on the line of sight axis and stores an accommodation time indicating a period of time in which the eye becomes in an accommodated state to the test lens.

A vision training device includes a main body, a lens unit, a drive motor, and a controller. The lens unit includes a plurality of lenses respectively having different diopter values and a lens holder that supports the lenses. The drive motor moves the lens holder so that one of the lenses of the lens unit is disposed on a line of sight axis. The controller controls the drive motor such that a test lens selected from the plurality of lenses is disposed on the line of sight axis and stores an accommodation time indicating a period of time in which the eye becomes in an accommodated state to the test lens.

An apparatus to treat refractive error of the eye comprises one or more optics configured to project stimuli comprising out of focus images onto the peripheral retina outside the macula. While the stimuli can be configured in many ways, in some embodiments the stimuli are arranged to decrease interference with central vison such as macular vision. The stimuli can be out of focus images may comprise an amount of defocus within a range from about 3 Diopters (“D”) to about 6 D. In some embodiments, the brightness of the stimuli is greater than a brightness of background illumination by an appropriate amount such as at least 3 times the background brightness. In some embodiments, each of a plurality of stimuli comprises a spatial frequency distribution with an amplitude profile having spatial frequencies within a range from about range of 1×10.sup.−1 to 2.5×10.sup.1 cycles per degree.

Disclosed is a wearable optical devices for a human subject, comprising: a transparent lens; a wearable frame configured to maintain the lens in front of an eye of a human subject; a transparent pixelated active optical element where the pixels of the active optical element have an optical property with a changeable value; an eye tracker; and a controller configured to set a value for an optical property of the pixels of the active optical element so as to create an image mask through which at least some of the light reaching the feye passes through, thereby modifying the image formed on the retina of the first eye.