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YY/T 1418-2016 English PDF

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YY/T 1418-2016: Ophthalmic optics and instruments. Reporting aberrations of the human eye
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Basic data

Standard ID YY/T 1418-2016 (YY/T1418-2016)
Description (Translated English) Ophthalmic optics and instruments. Reporting aberrations of the human eye
Sector / Industry Medical Device & Pharmaceutical Industry Standard (Recommended)
Classification of Chinese Standard C40
Classification of International Standard 11.040.70
Word Count Estimation 29,290
Date of Issue 2016-01-26
Date of Implementation 2017-01-01
Quoted Standard ISO 8429
Adopted Standard ISO 24157-2008, IDT
Regulation (derived from) China Food and Drug Administration Bulletin 2016 No.25
Issuing agency(ies) State Food and Drug Administration
Summary This standard specifies the standard method of human eye aberrations.

YY/T 1418-2016: Ophthalmic optics and instruments. Reporting aberrations of the human eye

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Ophthalmic optics and instruments.Reporting aberrations of the human eye ICS 11.040.70 C40 People's Republic of China Pharmaceutical Industry Standard Ophthalmic optics and instrumental eye aberrations (ISO 24157..2008, IDT) 2016-01-26 release 2017-01-01 Implementation State Food and Drug Administration issued Directory Preface I 1 Scope 1 2 normative reference document 1 3 Terms and definitions 1 4 coordinate system 4

5 representation of wavefront data

5.1 Represent the wavefront data in the form of a Zernike polynomial function coefficient 5.2 The wavefront data 8 is represented by the wavefront gradient field or the wavefront aberration function value 5.3 gradient fitting error 6 people eye aberration of the data that 8 6.1 Overview 8 6.2 The aberration data in the form of normalized Zernec coefficient 6.3 The aberration data 9 in the form of a normalized Zenic coefficient expressed as a numerical/azimuthal representation 6.4 aberration data in the form of topographic maps 6.5 Data of composite aberration Appendix A (informative) Method of Solving Zenik Coefficient 13 Appendix B (informative) Conversion of Zenik Coefficients for Different Aperture Dimensions, Eccentricity and Coordinate System Rotation 15 Appendix C (informative) Conversion between Zenik Coefficients represented by different symbol systems 21 Appendix D (informative) A computer program algorithm for solving partial derivatives of non-normalized Zenic polynomial functions 23 Appendix E (informative) Normalized Zenic Polynomial Function Table (to the sixth radial order) 25

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the translation method equivalent to ISO 24157..2008 "ophthalmic optics and instrument eye aberrations" (English version). Please note that some of the contents of this document may involve patents. The issuer of this document does not assume responsibility for the identification of these patents. This standard is proposed by the State Food and Drug Administration. This standard is nationalized by the National Standardization Subcommittee for Medical Optics and Instruments (SAC/TC103/SC1). The drafting of this standard unit. Zhejiang Medical Device Testing Institute. The main drafters of this standard. Yan Qinglai, Jia Xiaohang, Luo Yongjie, Zhang Qiaoyuan. Ophthalmic optics and instrumental eye aberrations

1 Scope

This standard specifies the standard method of human eye aberration.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. ISO 8429 Optics and Optical Instruments - Ophthal- mology-Graduateddialscale

3 terms and definitions

The following terms and definitions apply to this document. The symbols used are shown in Table 1. Table 1 symbols The symbol name gives the defined chapter A (mθ, α) Zenik function of the numerical/azimuthal form of the meridian term 5.1.9 cmn Zenik coefficient 3.3 cN Zenik coefficient --- value 5.1.9 m meridian function of the meridian index 3.2 Mmn mθ () The meridian term of the Zenik function 3.2.3 The radial index of the Zenik function Nmn normalization of the Zenik function 3.2.5 R mn (ρ) The radial term of the Zenik function 3.2.1 Zmn Zenik function [another symbol. Z (n, m)] 3.2 Znm Zenic function - numerical/azimuthal form 5.1.9 coefficient transformation angle of numerical and azimuthal angle form of Zenic function ρ Zenik function radial parameters 3.2.2 θ Zeick function meridian parameter 3.2.4 W (x, y) wavefront aberration 3.4 β x, yx, y measured at the gradient of 3.8 The wavefront gradient at ∂W (x, y) x, y is 3.8 βfit gradient fitting error 5.3

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