11 results about "Subjective refraction" patented technology

The invention discloses an astigmatism coaxial decomposition method, system and device for analyzing the astigmatism correction effect of a corneal refractive surgery, and relates to the technical field of corneal refractive surgeries, and the method comprises the steps: obtaining a preoperative subjective optometry result and a postoperative subjective optometry result of a to-be-evaluated user; based on the preoperative subjective optometry result and the postoperative subjective optometry result, the actual correction refractive power decomposed in the axial direction of the expected correction lenticular lens is determined; based on the preoperative subjective optometry result and the postoperative subjective optometry result, the maximum actual correction refractive power decomposed in the direction perpendicular to the axial direction of the expected correction lenticular lens is determined; the surgical actual corrective diopter of the user is determined based on the actual corrective power decomposed in the axial direction of the lenticular and the maximum actual corrective power decomposed perpendicular to the axial direction of the lenticular. According to the astigmatism description method provided by the invention, the efficiency, practicability and comprehensiveness of astigmatism correction effect analysis are improved.

This invention belongs to the field of subjective optometry prescription parameter measurement and prescription technology. It provides a prescription generation method based on optometrist prescription big data and visual AI big model, including: acquiring retinal reflection image sequences under various physiological optical conditions and incident light source physical conditions; using visual AI big model to perform feature encoding and inference on the image sequences to generate patient subjective optometry prescriptions; this invention realizes the mapping from image sequence representation to optometrist subjective optometry prescriptions that can be used for direct prescription by acquiring retinal reflection image sequences under multiple physiological and physical conditions and combining the feature extraction and analysis capabilities of the pre-built AI big model; through feature encoder and subjective refractive power generator, the physical consistency, robustness and individual adaptability of subjective optometry prescription parameter prediction are enhanced, realizing automated and high-precision subjective optometry prescription generation.

An apparatus, and corresponding method, for determining a property of an eye includes a housing with a proximal port that receives an eye and also light from the eye. The housing further includes a distal port, and the two ports together form a visual channel providing an open view to enable the eye to see target indicia external to and spaced away from the housing. A wavefront sensor within the housing is configured to receive the light from the eye via the optical path and to measure a wavefront of the light. A determination module determines an objective refractive correction based on the wavefront and predicts a subjective refractive preference of a person having the eye based on the objective refractive correction. Embodiments can be handheld, and binocular, and predict subjective refraction based on demographic and other information.

Methods and systems herein include displaying at least one image to a test subject, wherein the at least one image has a visual appearance to the test subject based on physical characteristics of the

The invention provides comprehensive refraction detection equipment and method. The equipment comprises a support (1), an operation table (10) fixedly mounted on the support (1), a mounting seat (11) fixed on the top surface of the operation table (10), an inspection tester (15) arranged on the mounting seat (11) and a local computer (12) arranged on the bottom surface of the operation table (10), a central control unit and a storage part are arranged in the local computer (12); a head fixing part (2) and an eye fitting part (3) are arranged on the front side of the inspection tester (15), and an artificial intelligence (AI) dialogue module, a voice input acquisition module, a subjective optometry module, an objective optometry module, a fundus image camera, an eye movement tracking part, an eye axis meter control device and an eye axis meter are integrated in the inspection tester (15). By integrating the functional modules and coordinating the work of the modules through the central control unit, the inspection efficiency and the diagnosis reliability can be effectively improved.

Methods and systems herein include displaying at least one image to a test subject, wherein the at least one image has a visual appearance to the test subject based on physical characteristics of the

A system for administering a subjective refraction comprising a phoropter, a display, and a computing device configured to generate a first set of conditions for a first test; receive a first input indicative of the patient's vision under the first set of conditions; automatically display, based on the first input, an updated first visual reference; iteratively update, based on the first input, a second combination of the plurality of lenses and receive feedback from the patient until a predefined number of responses are received to determine an endpoint for the first test; automatically generate and display a second set of conditions for a second test and a second plurality of response fields; receive an updated input indicative of the patient's vision under the second set of conditions; and determine an endpoint for the second test based on a determined a visual acuity matching a predefined visual acuity value.

Methods and systems herein include displaying at least one image to a test subject, wherein the at least one image has a visual appearance to the test subject based on physical characteristics of the

An optical optometry system belongs to the field of optometry and comprises a spherical lens A, a spherical lens B, a cylindrical lens A and a cylindrical lens B which are sequentially arranged along an optical axis from an object side to an image side, the spherical lens A is movably arranged along the optical axis, the cylindrical lens A and the cylindrical lens B are rotatably arranged by taking the optical axis as an axis, an intersection point of an axial position of the cylindrical lens A and an axial position of the cylindrical lens B is positioned on the optical axis, and the cylindrical lens A and the cylindrical lens B are positioned on the optical axis. The axial position of the cylindrical lens A and the axial position of the cylindrical lens B are both perpendicular to the optical axis, the image-side focal power of the spherical lens A is phi 1, the image-side focal power of the spherical lens B is phi 2, the image-side focal power of the cylindrical lens A is phi 3, the image-side focal power of the cylindrical lens B is phi 4, and phi 1, phi 2, phi 3 and phi 4 meet the following relations that phi 1 is larger than 0 and equal to phi 2 + phi 3, phi 3 is equal to phi 4, and individual independent and rapid optometry can be achieved.

Methods and systems herein include displaying at least one image to a test subject, wherein the at least one image has a visual appearance to the test subject based on physical characteristics of the

Provided are a recording medium and a subjective refraction system that enable more smooth execution of subjective refraction. A first information processing device acquires an instruction signal that instructs an operation of a subjective refraction device, and transmits a drive signal that causes the operation instructed by the acquired instruction signal to be performed to the subjective refraction device. In a case where the first information processing device is being remotely accessed by a second information processing device, the first information processing device can acquire an instruction signal input by a user to the second information processing device via a network. In addition, the first information processing device can acquire a response input by a subject who visually confirmed a presented visual target, and generate an instruction signal that instructs an operation of the subjective refraction device based on the acquired response.