A vision inspection and correction method, which mainly uses an image adjustment software/device to separate the eyes of the inspected person on an independent display screen, and the visual mark seen by the same vision is designed to be misaligned; through the guidance and interaction of the inspector and the inspected person, the inspector can adjust the image operation to zoom in/out/shift/focus/diverge/rotate, etc., so that the inspected person's binocular images can be clearly distinguished and adjusted. Then, the binocular images are aligned, and the inspector will implant the correction parameters during the image adjustment process into 3D projectors, VR (virtual reality), AR (augmented reality device), MR hybrid reality device and other equipment to adjust the binocular digital image parameters, thus the users can enjoy personalized adjustment and comfortable images of both eyes, or provide them to lens makers, based on this, create lenses that can make the inspected person's eyes see clearly aligned images.

An apparatus for performing optometric measurements includes an opto-adjustable lens, the optical power of which is adjustable, with the lens being controlled by a periodic signal configured for producing a periodic optical power wave over time. The apparatus also includes a component for the adjustment of the mean value of the periodic optical power wave. The apparatus further includes an optical projector system for projecting a plane of the opto-adjustable lens onto a plane external to the apparatus, and in that the periodic signal has an amplitude such that it produces an amplitude of the periodic optical power wave corresponding to a chromatic difference of focus between a first wavelength and a second wavelength of visible light which passes the opto-adjustable lens. A system for the performance of optometric measurements and a method for adjusting the optical power of an adjustable lens are related to the apparatus.

A subjective optometry apparatus includes: a subjective measurer which has a corrective optical system disposed on an optical path of a light projecting optical system configured to project a target light flux toward an examinee's eye and configured to change an optical characteristic of the target light flux and which is configured to subjectively measure an optical characteristic of the examinee's eye; an acquisitor configured to acquire position information on at least one of examinee's right and left eyes; a determiner configured to determine, based on the position information acquired by the acquisitor, whether or not subjective measurement can be implemented in a binocular open state of the examinee's right and left eyes, thereby acquiring determination information; and a determination information output unit configured to output the determination information acquired by the determiner.

A portable intelligent multi-function phoropter is disclosed. The phoropter comprises a casing, a plurality of control elements, two adjustable eyepiece modules, a plurality of micro motors, a liquid crystal display module, a control module and a power supply module. The casing of the present invention is small so that the overall volume is small, and it is convenient to carry and use. The present invention has many test patterns, so different vision tests can be performed. With the combination of convex lens and concave lens and the application of existing electronic components, the overall price is reduced. The invention satisfies the market demand for the phoropter.

An ophthalmologic apparatus includes a subjective measurement optical system configured to measure a subjective refractive value of a subject eye, an objective measurement optical system configured to measure objective refractive characteristics of the subject eye, and a controller configured to control the subjective measurement optical system and the objective measurement optical system. The controller is further configured to measure the objective refractive characteristics of the subject eye by the objective measurement optical system and perform objective monitoring to monitor objective measurement information obtained by the measurement of the objective refractive characteristics during an RG test for checking whether or not corrected power is overcorrected or undercorrected by the subjective measurement optical system.

The present invention relates to a test system for assessing color vision variability of test persons (7). The test system comprises at least two test carriers (1), wherein each of the at least two test carriers (1) is provided with a two-dimensional pattern (4) including a background (2) and a plurality of samples (3). The plurality of samples (3) and the background (2) of each one of the at least two test carriers (1) are made of at least two different dyestuff combinations representing metameric colors. The samples (3) and/or the background (2) show color scaling in at least two directions such that each one of the at least two test carriers (1) is configured to provide that a test person (7) can select a spot (PIS.sub.C) from the two-dimensional pattern (4) where the metameric colors of the samples (3) and the background (2) match best. The system further comprises a test illuminant unit (5) configured to provide light for the color vision variability assessment, the light having a specific spectral power distribution. The system further comprises a processing unit (6) configured to predict a color matching function and/or to determine a congenital and/or acquired color vision deficiency of the test person (7) by calculating a variation of the spot (PIS.sub.C) selected by the test person (7) as compared to a spot (PISS) computed by the processing unit (6) based on data of a predefined standard observer considering the specific spectral power distribution of the light of the test illuminant unit (5).

A vision inspection and correction method, which uses an image adjustment software/device to separate the eyes of the inspected person on an independent display screen, and the visual mark seen by the same vision is designed to be misaligned; through the guidance and interaction of the inspector and the inspected person, the inspector can adjust the image operation to zoom in or out, shift, focus, diverge, and rotate, etc., so that the inspected person's binocular images can be clearly distinguished and adjusted. Then, the binocular images are aligned, and the inspector will implant the correction parameters during the image adjustment process into 3D projectors, VR (virtual reality), AR (augmented reality device), MR hybrid reality device and other equipment to adjust the binocular digital image parameters, so users have, or can provide to a lens maker, personalized adjustment for comfortable images of both eyes.

A system and method for home testing of patient focal length, and detecting for the presence or changes in myopic conditions utilizing a multi-colored testing screen. Utilizing the varied refractive properties of each wavelength of light (colors), changes in myopia and focal length can be monitored in each of the separate colors. Baseline visual acuity is determined, and the testing occurs with relevant-sized optotypes. Optotypes are displayed in red, white, and green, simultaneously on a display screen set at four meters distance. Games and acuity tests are conducted to determine the focal acuity at each of the wavelengths. Results are recorded and used for future diagnosis and treatment.

Disclosed is a measurement method for determining a value of a visual correction need for near vision of an individual in a natural posture for near vision. A recognizing limit distance is determined so that the individual is able to recognize at least one predetermined symbol farther than the limit distance relatively to the individual and unable to recognize the at least one predetermined symbol closer to the individual than the limit distance. A portable medium displaying the predetermined symbol is displaced in front of the face and eyes of the individual to change a frontal distance between his/her eyes and the portable medium and in which when a recognizing limit distance is detected by the individual, the limit distance is measured and the value of the visual correction need is determined from the measured limit distance, wherein the visual correction need includes an accommodation compensation need.

A method for examining a driver of a vehicle. In accordance with the method, at least one part of at least one eye and/or at least one part of the face of the driver is captured using a monitoring unit. The data captured by the monitoring unit is evaluated and the visual perception capability of the driver is examined based on the captured data. The method may further include identifying the driver and operating devices of the vehicle using the captured data.