Title:
METHODS AND DEVICES FOR REFRACTIVE CORRECTION OF EYES
Document Type and Number:
Japanese Patent JP2016163719
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide methods and devices for obtaining refractive correction with superior visual acuity (e.g., 20/10) by achieving an astigmatism-free customized refractive correction.SOLUTION: An astigmatism-free customized refractive correction involves: obtaining an objective and precise measurement of cylindrical power in a resolution between 0.01 D and 0.10 D in an eye using an objective aberrometer, reliably relating the cylindrical axis obtained from the objective aberrometer to that in a phoroptor; determining an optimized focus error of an eye through subjective refraction with a phoroptor; generating a customized refraction by combining the objectively measured cylindrical power, the objectively measured cylindrical axis, and the subjectively measured focus power; fabricating a custom lens with a tolerance finer than 0.09 D based on the generated customized refraction; and delivering an ophthalmic lens that can provide an astigmatism-free refractive correction for an eye.SELECTED DRAWING: Figure 1
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Inventors:
LIANG JUNZHONG
Application Number:
JP2016078887A
Publication Date:
September 08, 2016
Filing Date:
April 11, 2016
Export Citation:
Assignee:
PERFECT VISION TECH (HK) LTD
International Classes:
A61B3/028; A61B3/103; G02C7/02; G02C13/00
Domestic Patent References:
| JPH08215148A | 1996-08-27 | |||
| JP2007531559A | 2007-11-08 | |||
| JPH11113848A | 1999-04-27 | |||
| JP2008113810A | 2008-05-22 |
Foreign References:
| US20030151721A1 | 2003-08-14 |
Attorney, Agent or Firm:
Fukami patent office
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