A method of automating the collection, association, and coordination of multiple medical data sources using a coordinating service application, computer, database, and/or server system to manage devices, examinations, and people involved in the medical examination and treatment process. In an embodiment, the method comprises authenticating a user for a premises, a device, or a device group, validating particular use of the device based on user credentials or type of device or device group, associating a medical examination with a patient or a medical examination schedule, associating medical examination data from a device or device group with a related medical examination session, routing medical examination data to a computer, database, or server, and pairing medical examination session data with a medical interpretation, clinical testing results, diagnoses, and/or other recorded information.

A machine arrangement, for sequentially processing sheet-type substrates, includes a plurality of different processing stations, one of which includes a non-impact printing device that prints the substrates. The processing station, including the non-impact printing device, also includes a printing cylinder, on the circumference of which, the non-impact printing device that prints the substrates is arranged. On the circumferential surface of the printing cylinder, four substrates are or can be placed behind each other in the circumferential direction. Each of the substrates that are to be conveyed are retained in one of a force-locking and a form-fitting manner on the circumferential surface of the printing cylinder by at least one retaining element.

A refraction device includes a main body, a spherical power lens coupled to the main body, an astigmatic power lens movably coupled to the main body, and a visual display coupled to the main body and oriented toward an optical pathway extending through the spherical power lens and the astigmatic power lens. The visual display is configured to display an image for testing visual acuity.

Methods, apparatus, and systems for performing an ophthalmic diagnostic test are disclosed. In one aspect, a head-wearable device for administering an ophthalmic test to a subject can comprise a head-wearable frame for mounting the device onto the subject's head, and a light seal configured for coupling to the frame so as to isolate at least one eye of the subject from ambient light when the device is worn by the subject.

A system for preventing motion sickness resulting from virtual reality or augmented reality is disclosed herein. In one embodiment, the system includes a virtual reality or augmented reality headset configured to be worn by a user, the virtual reality or augmented reality headset configured to create an artificial environment and/or immersive environment for the user; at least one fluidic lens disposed between an eye of the user and a screen of the virtual reality or augmented reality headset; and a fluid control system operatively coupled to the at least one fluidic lens. In another embodiment, the system includes at least one tunable prism disposed between an eye of the user and a screen of the virtual reality or augmented reality headset, the at least one tunable prism configured to correct a convergence problem associated with the eye of the user.

A method to automatically adjust user perception of an input image to be rendered on a digital display that has an array of light field shaping elements (LFSE), can include: digitally mapping the input image on a retinal plane of the user, and for each pixel digitally projecting an adjusted image ray trace between said given pixel and a given LFSE to intersect said retinal plane at a given adjusted image location, given an estimated direction of a light field emanated by said given pixel given said given LFSE and a modeled redirection of said adjusted image ray trace in accordance with a designated eye focus parameter; associating an adjusted image value designated for said given adjusted image location with said given pixel based on said mapping; rendering each said given pixel according to said adjusted image value associated therewith, thereby rendering a perceptively adjusted version of the input image.

A machine arrangement, that sequentially processes sheet-type substrates, includes a plurality of different processing stations, one of which includes a non-impact printing device that prints the substrates. Further processing stations are a primer application device that primes the substrates and a dryer for drying the primer applied to the substrates. The primer application device and the dryer precede the non-impact printing device, in the direction of travel of the substrates. The processing station including the non-impact printing device, also includes a printing cylinder, on the circumference of which, the non-impact printing device that prints the substrates is arranged.

A method to automatically adjust user perception of an input image to be rendered on a digital display that has an array of light field shaping elements (LFSE), can include: digitally mapping the input image on a retinal plane of the user, and for each pixel digitally projecting an adjusted image ray trace between said given pixel and a given LFSE to intersect said retinal plane at a given adjusted image location, given an estimated direction of a light field emanated by said given pixel given said given LFSE and a modeled redirection of said adjusted image ray trace in accordance with a designated eye focus parameter; associating an adjusted image value designated for said given adjusted image location with said given pixel based on said mapping; rendering each said given pixel according to said adjusted image value associated therewith, thereby rendering a perceptively adjusted version of the input image.

A virtual reality-based ophthalmic inspection system includes a wearable unit, an electronic unit, and at least one detector; the wearable unit is available for an inspected object to wear the wearable unit on head; the electronic unit is assembled with the wearable unit and has a left-eye display zone and a right-eye display zone, wherein the left-eye display zone is used for displaying at least one left-eye sight-targets, and the right-eye display zone is used for displaying at least one right-eye sight-targets; the detector is disposed on the electronic unit. A sight-target with at least one distinguishing feature are shown on one of the left-eye display zone and the right-eye display zone, the left-eye display zone displays the sight-target while the right-eye display zone is filled with black, and the right-eye display zone displays the sight-target while the left-eye display zone is filled with black.

A system and a method for holographic eye testing device are disclosed. The system renders one or more three dimensional objects within the holographic display device. The system updates the rendering of the one or more three dimensional objects within the holographic display device, by virtual movement of the one or more three dimensional objects within the level of depth. The system receives input from a user indicating alignment of the one or more three dimensional objects after the virtual movement. The system determines a delta between a relative virtual position of the one or more three dimensional objects at the moment of receiving input and an optimal virtual position and generates prescriptive remedy based on the delta.