Measurement of intraocular lengths by dual-beam Fourier low-coherence interferometry on the basis of Fresnel-zone-type space-time domain interferograms of the Purkinje-Sanson reflexes. The eye is illuminated by parallel, monochromatic dual beams having wavelengths which differ in temporal sequence. Wavelength spectra of space-time domain interferograms are imaged onto a photodetector array and registered. Viewing direction and position of the eye are fixed by optical aids and are monitored by acoustic and optical aids. A zoom optical unit in the output beam of the ophthalmological interferometer makes it possible, by simple focusing, to image virtual Fresnel-zone-type space-time domain interferograms from contrast-optimized positions onto the photodetector array or onto an image intensifier that is arranged in front of the photodetector array such that the position-dependent size change of the space-time domain interferograms is compensated by the scale change of this imaging.

A system and method for testing a subject for cognitive or oculomotor impairment includes presenting the subject with a display of an object, while presenting the display to the subject, and the subject's head moves horizontally or vertically within a predefined range of movement rates, measuring the subject's right eye positions and/or the subject's left eye positions. The system generates a metric by statistical analysis of the measurements of subject's right eye positions or the subject's left eye positions, and generates a report based on the metric. In some embodiments, the system is configured to train the subject to improve their performance, and thereby remediate or reduce cognitive and oculomotor impairment.

A system having a scope with a longitudinal length extending between a proximal end and a distal end includes a plurality of markers spaced along the longitudinal length. The system also includes a disassociation and positioning device that is configured to enhance unsedated transnasal endoscopic procedures by at least partially occluding the vision of a patient while enabling body cavity access, and optionally record and sense body functions such as temperature, heart rate and oxygenation of the blood stream. The system further includes a sensor integrated into the distraction device, wherein the sensor is configured to detect the markers on the longitudinal length of the scope.

The disclosed embodiments include a system that has a processor for executing computer-executable instructions and a computer-readable storage media for storing the computer-executable instructions. These instructions, when executed by the processor, enable the system to receive prescription data of a patient for corrective lenses and image data associated with the face of the patient. The system is configured to determine lens attributes for the patient based upon the prescription data and also determine facial attributes of the patient from the image data. Based on the lens attributes and the facial attributes of the patient, the system determines at least one frame recommendation for the patient.

A system and method for determining an adapted ophthalmic device for a wearer, the method including acquiring a set of parameters values relating to the wearer, determining at least a task to be performed by the wearer involving visual exploration, using a computing system, determining a value of a criterion assessing an efficiency of the wearer's visual exploration strategy for the task, and determining an optical design of an ophthalmic device to be worn by a wearer according to the determined value of the criterion.

The disclosed apparatus, systems and methods relate to pupillary assisted communication systems, devices and methods. A classification algorithm such as a hybrid classification algorithm is utilized to utilize at least one pupillary-response sensing device and at least one non-pupillary response sensing device to generate and process subject data to improve feedback systems and improve non-verbal communication and stimulus-response operations systems.

The present disclosure relates generally to systems and methods for testing and determining a corrective lens prescription for a patient. In an example embodiment, a method includes receiving, in a remote device, a link to enable a patient to launch an interface on the remote device for interacting with a patient terminal in a hand held manner. The interacting includes receiving instructions from a server and enabling the patient to make at least one input to the server via the remote device over a communication interface to control the first computerized screen from a distance. The method also includes displaying a figure on the first computerized screen and enabling the patient to make a least one input via the remote device to change a size of the figure. The input corresponds to a sphere measurement of the patient.

Embodiments relate to an optical trial frame that includes: left and right frames extending in the left and right directions respectively; a bridge located between and connected to the left and right frames such that the left and right frames can move relative to each other along a longitudinal axis of the bridge; left and right temples connected to the respective left and right frames; left and right lens holders rotatably coupled to the left and right frames respectively and configured to receive and retain lenses in use; and, capacitive sensing means configured to detect and measure at least one of: a lateral position of one of the frames; and, a rotational position of one of the lens holders.

A system having a scope with a longitudinal length extending between a proximal end and a distal end includes a plurality of markers spaced along the longitudinal length. The system also includes a disassociation and positioning device that is configured to enhance unsedated transnasal endoscopic procedures by at least partially occluding the vision of a patient while enabling body cavity access, and optionally record and sense body functions such as temperature, heart rate and oxygenation of the blood stream. The system further includes a sensor integrated into the distraction device, wherein the sensor is configured to detect the markers on the longitudinal length of the scope.

Methods and devices for determining at least one centring parameter are disclosed. A mobile terminal is moved from a first position to a second position, and a respective image is captured of an eye area of a person. The acceleration is also measured during the movement. The centring parameter is then determined based on the captured image and the measured acceleration.