Disclosed embodiments may include a device, system and method for providing a low cost device that can measure refractive errors very accurately via attachment to a smart phone. A disclosed device may use ambient light or a light source in simulating the cross cylinder procedure that optometrists use by utilizing the inverse Shack-Hartman technique. The optical device may include an array of lenslets and pinholes that will force the user to effectively focus at different depths. Using an optical device, in conjunction with a smart phone, the user first changes the angle of the axis until he/she sees a cross pattern (the vertical and horizontal lines are equally spaced). The user adjusts the display, typically using the controls on the smartphone, to make the lines come together and overlap, which corresponds to bringing the view into sharp focus, thus determining the appropriate optical prescription for the user.

Disclosed embodiments may include a device, system and method for providing a low cost device that can measure refractive errors very accurately via attachment to a smart phone. A disclosed device may use ambient light or a light source in simulating the cross cylinder procedure that optometrists use by utilizing the inverse Shack-Hartman technique. The optical device may include an array of lenslets and pinholes that will force the user to effectively focus at different depths. Using an optical device, in conjunction with a smart phone, the user first changes the angle of the axis until he/she sees a cross pattern (the vertical and horizontal lines are equally spaced). The user adjusts the display, typically using the controls on the smartphone, to make the lines come together and overlap, which corresponds to bringing the view into sharp focus, thus determining the appropriate optical prescription for the user.

A method and an apparatus for testing night vision are disclosed. At least one visual mark is presented to a test person having an open pupil from a distance of several meters. The visual mark is configured as a light point, and a visual impression of the test person is determined by means of the visual mark. The apparatus comprises means for opening a pupil of a test person, in particular a darkened room. An examination position for the test person and a presentation apparatus for visual marks arranged at a distance of several meters from the examination position are also provided. The presentation apparatus comprises at least one point-shaped light source. A light beam thereof is directed towards the examination position. Means are provided for determining a visual impression of the test person with the help of the visual marks.

A method and an apparatus for testing night vision are disclosed. At least one visual mark is presented to a test person having an open pupil from a distance of several meters. The visual mark is configured as a light point, and a visual impression of the test person is determined by means of the visual mark. The apparatus comprises means for opening a pupil of a test person, in particular a darkened room. An examination position for the test person and a presentation apparatus for visual marks arranged at a distance of several meters from the examination position are also provided. The presentation apparatus comprises at least one point-shaped light source. A light beam thereof is directed towards the examination position. Means are provided for determining a visual impression of the test person with the help of the visual marks.

The present invention relates to a system (10) for assessing eyesight acuity of a subject (20), comprising: a display (12) for displaying graphics and/or text to the subject (20); an eye movement sensor (14, 14′) for monitoring an eye movement of the subject (20) while the subject (20) is watching the graphics and/or text displayed on the display (12); a processing unit (16) for assessing the eyesight acuity of the subject (20) based on an analysis of the monitored eye movement, wherein the analysis of the monitored eye movement includes an analysis of at least one of a duration of eye saccades, a frequency of eye saccades, a duration of eye fixations and a frequency of eye fixations in the monitored eye movement; and an output unit (18, 18′) for indicating the result of the assessment of the eyesight acuity. The present invention furthermore relates to a system (110) for assessing hearing ability of a subject (20).

A Progressive Lens Simulator comprises an Eye Tracker, for tracking an eye axis direction to determine a gaze distance, an Off-Axis Progressive Lens Simulator, for generating an Off-Axis progressive lens simulation; and an Axial Power-Distance Simulator, for simulating a progressive lens power in the eye axis direction. The Progressive Lens Simulator can alternatively include an Integrated Progressive Lens Simulator, for creating a Comprehensive Progressive Lens Simulation. The Progressive Lens Simulator can be Head-mounted. A Guided Lens Design Exploration System for the Progressive Lens Simulator can include a Progressive Lens Simulator, a Feedback-Control Interface, and a Progressive Lens Design processor, to generate a modified progressive lens simulation for the patient after a guided modification of the progressive lens design. A Deep Learning Method for an Artificial Intelligence Engine can be used for a Progressive Lens Design Processor.

A Progressive Lens Simulator comprises an Eye Tracker, for tracking an eye axis direction to determine a gaze distance, an Off-Axis Progressive Lens Simulator, for generating an Off-Axis progressive lens simulation; and an Axial Power-Distance Simulator, for simulating a progressive lens power in the eye axis direction. The Progressive Lens Simulator can alternatively include an Integrated Progressive Lens Simulator, for creating a Comprehensive Progressive Lens Simulation. The Progressive Lens Simulator can be Head-mounted. A Guided Lens Design Exploration System for the Progressive Lens Simulator can include a Progressive Lens Simulator, a Feedback-Control Interface, and a Progressive Lens Design processor, to generate a modified progressive lens simulation for the patient after a guided modification of the progressive lens design. A Deep Learning Method for an Artificial Intelligence Engine can be used for a Progressive Lens Design Processor.

A method for intermediate assessment of an eye, whereby an intermediate assessment is carried out making it possible to adapt and optimise a subsequent full assessment. The preliminary assessment takes slightly more time initially but provides for greater efficiency in carrying out the subsequent full assessment by preventing the performance of operations or calculations that are unsuccessful.

A method for carrying out an eye examination on an examinee is provided. The method includes providing a display configured for displaying a visual stimulus; forming a visual path between the display and at least one eye of the examinee; displaying on the display at least one visual stimulus having visual characteristics; detecting reflexive eye response of the at least one eye in response to the displaying of the visual stimulus; assessing vision of the at least one eye in accordance with the reflexive eye response and the characteristics of the visual stimulus.

A method for carrying out an eye examination on an examinee is provided. The method includes providing a display configured for displaying a visual stimulus; forming a visual path between the display and at least one eye of the examinee; displaying on the display at least one visual stimulus having visual characteristics; detecting reflexive eye response of the at least one eye in response to the displaying of the visual stimulus; assessing vision of the at least one eye in accordance with the reflexive eye response and the characteristics of the visual stimulus.