Systems and methods for remote measurement of the eyes and delivering of sunglasses and eyeglasses

• US 9,649,032 B2
• Filed: 11/25/2013
• Issued: 05/16/2017
• Est. Priority Date: 12/01/2008
• Status: Active Grant

• Current Assignee: Perfect Vision Technology (HK) Ltd.
• Original Assignee: Perfect Vision Technology (HK) Ltd.
• Inventors: Liang, Junzhong
• Primary Examiner(s): SAHLE, MAHIDERE S
• Application Number:
  US14/646,734
• Publication Number:
  US 20150305619A1
• Time in Patent Office: 1,268 Days
• Field of Search: 351169, 351176, 351208-218
• CPC Class Codes: A61B 3/0025 characterised by electronic signal processing, e.g. eye models
• CPC Class Codes: A61B 3/0033 characterised by user input arrangements
• CPC Class Codes: A61B 3/0058 for multiple images
• CPC Class Codes: A61B 3/0083 provided with means for patient positioning
• CPC Class Codes: A61B 3/0285 Phoropters
• CPC Class Codes: A61B 3/036 for testing astigmatism
• CPC Class Codes: A61B 3/1015 for wavefront analysis
• CPC Class Codes: A61B 3/152 for aligning
• CPC Class Codes: A61B 3/18 Arrangement of plural eye-testing or -examining apparatus
• CPC Class Codes: G02C 2202/22 Correction of higher order and chromatic aberrations, wave front measurement and calculation
• CPC Class Codes: G02C 7/02 Lenses; Lens systems ; Methods of designing lenses
• CPC Class Codes: G16H 10/60 for patient-specific data, e.g. for electronic patient records
• CPC Class Codes: G16H 30/20 for handling medical images, e.g. DICOM, HL7 or PACS

Abstract

The present disclosure provides methods, devices, and systems for automated measured correction of the eyes and provision of sunglasses and eyeglasses for individuals, including individuals with a visual acuity of 20/20 or better. Methods, devices and systems for remote measurement of refraction by an examiner away from the measurement system are also disclosed.

Claims

1. A wavefront system for measuring refractive errors of an eye for prescription of eyeglasses, comprising:

a light source configured to produce a compact image at a retina of an eye, wherein reflected light from the retina generates an outgoing wavefront in front of a cornea of the eye from a reflection of the retina;

an optical relay for reproducing a wavefront emerging from the eye at a measurement plane away from the eye;

a wavefront sensor at the measurement plane, wherein the wavefront sensor includes a wavefront sampling device and a digital image module, the digital image module configured to record images of a wavefront that passes through the wavefront sampling device;

a digital processor configured to take a sequence of wavefront measurements at one time, including a) storing a plurality of wavefront images of the wavefront sensor into a memory unit, b) providing automatic detections of sampling points of the wavefront sensor, c) calculating wavefront slopes across a pupil of the eye, and d) determining wave aberration of the eye that includes at least a focus error, an astigmatism, and a spherical aberration;

a display module for displaying the wavefront images with automatic detections of sampling points of the wavefront sensor;

a real-time measurement intervention module configured to i) validate and accept measurements from the sequence of wavefront measurements, wherein the measurement validation comprises displaying analyzed wavefront images on a display and rejecting invalid measurements in the sequence of wavefront measurements;

a data consolidation module for calculating a spherical power and an astigmatism based on a statistical analysis from the accepted measurements from the sequence of wavefront measurements, the astigmatism comprising a cylinder power and cylinder angle; and

an output module configured to communicate a refractive prescription, wherein the refractive prescription includes at least a focus power, the cylinder power and the cylinder angle.

2. The wavefront system of claim 1 wherein the real-time measurement intervention module comprises a pointing device for rejecting an invalid measurement due to i) errors in automatic identification of image analysis, ii) inadequate pupil size for wavefront measurements, and iii) poor image quality of the wavefront sensor due to tear films or blinking eyes.

3. The wavefront system of claim 1 further comprising a module of remote control so that the wavefront system can be operated by an examiner at a location away from the wavefront system for at least one of i) data transfer between the digital processor in the wavefront sensor and the module of remote control, and ii) remote voice or video communication between the patient at an examination location and the examiner away from the wavefront sensor;

wherein the module of remote control is connected to the wavefront sensor through an electronic network, the module of remote control comprising at least one of i) a data module for data entry and transfer, ii) a module for voice communication between the patient and the examiner, and iii) a video module for real-time monitoring of the refraction process or for communication between the patient and the examiner.

4. The wavefront system of claim 1 further comprising a module for eye positioning, the module for eye positioning comprising:

a head rest;

a motion control system for positioning the head rest at a plurality of positions; and

a camera system for real-time monitoring of the relative position between the eye and an optical axis of the wavefront sensor, wherein the motion control system is controlled by the digital processor.

5. The wavefront system of claim 1 wherein the communication of the refractive prescription is in the form of printing, displaying, or exporting.

6. The wavefront system of claim 5, wherein the communication of the refractive prescription comprises at least one of:

a) generating a file of the prescription in a storage device, b) sending the file of the prescription through a network communication to another device, and c) communicating the refraction data to a phoroptor, wherein the file of the prescription may further include patient information.