A computer-readable medium includes computer-executable instructions that cause a processing unit of a user device to instruct a user to stand a predetermined distance from the user device, acquire an image of the user, and determine a user interpupillary distance based on the acquired image. The user interpupillary distance indicates a distance between the user's pupils in terms of pixels. The computer-executable instructions further cause the processing unit to determine a current distance between the user and the user device based on the user interpupillary distance, a predetermined interpupillary distance, a width of the acquired image in terms of pixels, and a field of view of the camera. Additionally, the computer-executable instructions cause the processing unit to display the current distance between the user and the user device on a display and display an eye chart when the determined current distance is equal to the predetermined distance.

Optoelectronic binocular instrument for the automatic correction of presbyopia and method for the binocular correction of the presbyopia. The instrument has two optoelectronic lenses (103, 110; 203, 204) and a capturing subsystem for taking images of the eye. By means of the pupil tracking, which performs the processing of the eye's images, the system determines the distance where the subject is looking at. The pupil tracking works at a very high speed, using a high-performance graphic processor and a highly parallelized algorithm for pupil tracking. The method consists of two phases. In the first one a calibration is accomplished, the subject is asked to look at targets at different distances and the size and position of the pupil is measured. In the second phase the correction is performed by the instrument, the system continuously captures and processes images to calculate the correction to apply and, finally, corrects the presbyopia by applying said correction.

A mobile device and a method for testing an individual's vision are provided, the mobile device including a screen for displaying at least one test pattern, such as a smartphone or a tablet computer. A test of the individual's vision is performed using the test pattern displayed on the screen of the mobile device, in particular for testing visual acuity, contrast sensitivity and/or visual disturbances. Further, a parameter influencing the test result is evaluated before and/or during performing the test. The parameter includes at least one of the distance between the eye of the individual and the screen; the brightness at which the test pattern is displayed; and the ambient luminosity.

In a method for determining at least one fitting parameter for a spectacle lens received in a spectacle frame, an image, lying in an image plane, of at least one portion of a spectacle frame worn by a subject is acquired. When acquiring the image, the inclination of the image plane about a horizontal axis which is parallel to the image plane is established and, in the process, the at least one fitting parameter is established from the acquired image of the portion of the subject with the spectacle frame worn by the subject and the established inclination of the image.

Some demonstrative embodiments include apparatuses, systems and/or methods of determining a pupillary distance. For example, a product may include one or more tangible computer-readable non-transitory storage media including computer-executable instructions operable to, when executed by at least one computer processor, enable the at least one computer processor to implement operations of measuring a pupillary distance between pupils of a user. The operations may include receiving a captured image comprising first and second reflections of a light of a light source, the first reflection comprising a reflection of the light from a first pupil of the user, and the second reflection comprising a reflection of the light from a second pupil of the user; and determining the pupillary distance based on locations of the first and second reflections in the captured image and an estimated distance between an image capturing device and pupils of the user, when the image is captured.

A device is disclosed for taking critical measurements of a dental patient's anatomical features to aid in building prosthetic teeth in a minimal number of patient visits. The device to a multi-functional tool for dental professionals to acquire valuable anatomical data.

A device for measuring facial anatomical parameters is provided. The device has a vertical bar having a top portion, middle portion, and a bottom portion and a horizontal slide adjustably affixed to the vertical bar. It has a forehead positioner pivotably and adjustably affixed to the top portion of the vertical bar, wherein the forehead positioner receives a forehead of the patient, a first mirror adjustably affixed to the left portion of the horizontal slide, wherein the first mirror is slidable along the horizontal slide, and wherein the first mirror rotates around its own Y-axis, and a second mirror adjustably affixed to the right portion of the horizontal slide, wherein the second mirror is slidable along the horizontal slide. A measuring grid on or proximate both the first mirror and the second mirror, wherein the measuring grids allows an examiner to accurately measure a point of interest of the facial anatomic parameters.

Systems and methods for creating fully custom products from scratch without exclusive use of off-the-shelf or pre-specified components. A system for creating custom products includes a computer communicatively coupled with an image capture device and configured to construct an anatomic model of the user based on captured image data and/or measurement data. The computer provides a configurable product model and enables preview and automatic or user-guided customization of the product model. A display is communicatively coupled with the computer and displays the custom product model superimposed on the anatomic model or image data of the user. The computer is further configured to provide the customized product model to a manufacturer for manufacturing eyewear for the user in accordance with the customized product model.

A method to self-test vision of a user for use with a handheld vision tester includes receiving image data of the user's face, determining dimensions of the user's face based on the received image data, computing a user viewing distance based on the determined dimensions, displaying a vision test based on the computed user viewing distance, receiving user input responses to the vision test, and outputting results of the vision test from the user input responses.

An ophthalmic image processing method, a non-transitory computer readable medium encoded with instructions for a computer to perform a method for processing images from an ophthalmic apparatus and an ophthalmic apparatus that irradiates an eye of a subject and gathers return light from a fundus of the eye. The ophthalmic apparatus may also comprise a wavefront sensor. The wavefront sensor may output to the memory, wavefront information that is representative of a wavefront of the return light from the fundus. The ophthalmic apparatus may also comprise a pupil monitor. The pupil monitor may output to the memory, a macro ocular portrait of the eye. The processor may produce an overlay image in which the wavefront information is overlaid on top of the macro ocular portrait.