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YY 0290.3-2018Ophthalmic optics—Intraocular lenses - Part 3: Mechanical properties and test methods (English PDF)

眼科光学 人工晶状体 第3部分:机械性能及测试方法

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Issued by

NMPA

Level / Type

Industry · Mandatory

Issue date

December 20, 2018

Implementation date

June 1, 2020

Scope

YY 0290.3-2018 is the English-translated version of 眼科光学 人工晶状体 第3部分:机械性能及测试方法.

YY 0290.3-2018 is the Chinese pharmaceutical industry standard that sets the main mechanical property requirements for intraocular lenses and the methods by which they are tested.

It is the third part of the YY 0290 series and applies to lenses implanted in the anterior segment of the human eye, covering the dimensions of the optic and of the haptics, the compression force and the axial displacement and tilt under compression, the fatigue and the resistance of the haptics, the surface and the freedom from defects.

It does not apply to corneal implants. Issued on 20 December 2018, it applies from 1 June 2020.

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Document preview — YY 0290.3-2018

National Standard of the People's Republic of China

ICS
11.040
Classification
C 40
Replacing
YY 0290.3-2008

Issued by: National Medical Products Administration of the People's Republic of China

Contents

  • Foreword
  • Introduction
  • 1 Scope
  • 2 Normative references
  • 3 Terms and Definitions
  • 4 Requirements
  • 4.1 Overview
  • 4.2 Size and tolerance
  • 4.3 Gap analysis (for anterior chamber intraocular lens)
  • 4.4 Compression force
  • 4.5 Axial displacement under compression
  • 4.6 Optical eccentricity
  • 4.7 Optical tilt angle
  • 4.8 Contact angle
  • 4.9 Compression force attenuation
  • 4.10 Dynamic fatigue durability
  • 4.11 Surgical operation
  • 4.12 Surface and material uniformity
  • 5 Performance recovery of simulated surgical operations
  • 6 Additional requirements for adjustable intraocular lenses (AIOLs)
  • Appendix A (Normative Appendix) Compression Test
  • Appendix B (Normative) Test for axial displacement under compression
  • Appendix C (Normative) Optical eccentricity test
  • Appendix D (Normative) Optical Dip Test
  • Appendix E (Normative) Test of contact angles
  • Appendix F (Normative Appendix) Test for Compressive Force Attenuation
  • Appendix G (Normative) Test for Dynamic Fatigue Durability
  • Appendix H (informative) haptic tensile strength test
  • Appendix I (informative) Gap Analysis
  • Appendix J (informative) Accuracy

Foreword

The full technical content of this standard is mandatory.

YY 0290 "Ophthalmic Optical Intraocular Lens" is divided into 9 parts.

--- Part 1. Terminology;

--- Part 2. Optical properties and test methods;

--- Part 3. Mechanical properties and test methods;

--- Part 4. Labels and information;

---Part 5. Biocompatibility;

--- Part 6. Validity and transport stability;

--- Part 8. Basic requirements;

---Part 9. Multifocal intraocular lens;

--- Part 10. There is a phakic intraocular lens. This part is the third part of YY 0290.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This part replaces YY 0290.3-2008 "Ophthalmic optical intraocular lens Part 3. Mechanical properties and test methods", and Compared with YY 0290.3-2008, the main differences are as follows.

--- Change the recommended terms to mandatory (see 4.9);

--- Increase the content of the introduction (see introduction);

--- Increase the requirements for the ring-shaped intraocular lens and the accommodating intraocular lens (see 4.1, Chapter 5, Chapter 6);

--- Modify the requirements of the gap analysis (see 4.3, 4.3 of the 2008 edition).

This section uses the drafting method to modify the use of ISO 11979-3:2012 "Ophthalmic Implants IOLs Part 3. Mechanical Properties and Test Method (English version). There are technical differences between this part and ISO 11979-3:2012. The terms involved in these differences have been passed.

The vertical single line (|) at the outer margin of the outer side is marked.

---About the normative reference documents, this standard has made technical adjustments to adapt to China's technical conditions, adjustments The situation is reflected in Chapter 2, "Regulatory Citations", and the specific adjustments are as follows.

- Replace ISO 11979-1 with YY 0290.1;

- Replace ISO 11979-2 with YY 0290.2.

--- The introduction part deletes the relevant content of the ISO 11979-7 clinical investigation;

--- Remove from the scope "If the test method is also suitable for special intraocular lens design," content;

--- 4.1 Overview in the "for some designs and applications" after the addition of "YY 0290 requirements of this part, if not applicable, should give full rationale By ", delete "in this case". Add "Note. Factory inspection can determine its sampling rules according to the manufacturer's specific circumstances. " Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents.

Introduction

This part of YY 0290 contains test methods with relevant requirements and test methods that do not have explicit requirements. The former for people The safety or performance of the working lens is necessary, while the latter provides basic information for the ophthalmologist or other intended users.

There are a variety of intraocular lens designs on the market, so in any case, it is suitable for all testers of intraocular lenses.

The law does not exist. It is expected that new materials currently being developed will lead to large-scale new designs, which may require revision or construction of the original method.

Establish other test methods. As with all standards, parties using standards can modify or improve the corresponding methods and provide relevant principles and tests.

Information and shall be consistent with this part of YY 0290.

In any case, given different tolerances are related to material or design, which reflects the current state of the product.

1 Scope

This section of YY 0290 specifies the main mechanical properties and test methods for intraocular lenses.

This section applies to the intraocular lens implanted in the anterior segment of the human eye. This section does not apply to corneal implants.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.

YY 0290.1 Ophthalmic optical intraocular lens Part 1. Terminology (YY 0290.1-2008, ISO 11979-1:2006, MOD)

YY 0290.2 Ophthalmic optical intraocular lens Part 2. Optical performance and test methods (YY 0290.2-2009, ISO 11979-2:1999, MOD)

3 Terms and definitions

The terms and definitions defined in YY 0290.1 apply to this document.

4 Requirements

4.1 Overview

For all intraocular lenses, mechanical properties must be tested under simulated intraocular conditions. Record the use of the solution for each test Precise composition. If the deviation of the test condition from the given simulated intraocular condition has been verified, such a change test condition can be used, such as.

Temperature conditions, a test environment should be given in the test report.

To complete each of the tests described below, at least 3 batches of medium power intraocular lenses should be tested if the power affects performance.

Test, the sample to be tested should consist of one batch of low, medium and high power. For ring-shaped intraocular lenses, each batch of these 3 batches In the middle, half of the intraocular lens has the highest cylindrical lens and the other half of the intraocular lens has the lowest cylindrical lens. In general, each batch The minimum number of samples should be 10, and each batch should represent the intraocular lens sold. The sampling rules used should be stated in each case.

The mean and standard deviation of the pooled samples should be given in the report.

For some designs and applications, the requirements in this section of YY 0290, if not applicable, should be justified. This part of YY 0290 If the specific test method described is not applicable, the manufacturer of the intraocular lens should give the corresponding test method and prove its validity and rationality.

The theoretical mechanism of action of the AIOL to change the power of the human eye should be described, such as artificial compression.

The curvature of the lens changes or the displacement of the lens element, and the like. The general principles that produce this mechanism of action should be described and specified. For theory The maximum and minimum limits contained in the mechanism of action should be further tested mechanically, if the dynamic response of the mechanism of action is time dependent, This time correlation should be described.

Note. The factory inspection can determine the sampling rules according to the manufacturer's specific conditions.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

Referenced standards

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Editions of YY 0290.3

EditionTitleRevisionStatus
YY 0290.3-2018Ophthalmic optics—Intraocular lenses - Part 3: Mechanical properties and test methodscurrent editionCurrent
YY 0290.3-2008Ophthalmic optics—Intraocular lenses - Part 3: Mechanical properties and test methodsprevious editionSuperseded

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