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YY 0674-2008Ophthalmic instruments - Phoropters (English PDF)

眼科仪器验光头

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Issued by

NMPA

Level / Type

Industry · Mandatory

Issue date

October 17, 2008

Implementation date

June 1, 2010

Scope

YY 0674-2008 is the English-translated version of 眼科仪器验光头.

YY 0674-2008 is the Chinese standard "Ophthalmic instruments - Phoropters". Its scope clause reads: This standard gives requirements and test methods for measuring the human eye binocular vision and refractive errors optometry head. Its clauses include terms and definitions.

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Document preview — YY 0674-2008

National Standard of the People's Republic of China

ICS: 11.040.70
Classification: C40

Issued by: National Medical Products Administration

Foreword
1 Scope
2 Normative references
3 Terms and Definitions

1 Scope

This standard gives requirements and test methods for measuring the human eye binocular vision and refractive errors optometry head.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB 9706.1 Medical Electrical Equipment Part 1. General requirements for safety (GB 9706.1-2007, IEC 60601. 1988, IDT)

GB/T 10050-1988 and optical equipment reference wavelength (eqv ISO 7944. 1984)

GB/T 14710-1993 Medical electrical equipment environmental requirements and test methods

GB/T 16886.5-2003 Biological evaluation of medical devices - Part 5. In vitro cytotoxicity tests (ISO 10993-5.1999,

IDT)

GB/T 16886.10-2005 Biological evaluation of medical devices - Part 10. irritation and delayed-type hypersensitivity test (ISO 10993-10.2002, IDT)

ISO 8429. 1986 Optics and optical instruments - Ophthalmology dial

ISO 15004.1997 ophthalmic instruments basic requirements and test methods

3 Terms and Definitions

The following terms and definitions apply to this standard.

3.1

To provide spherical lenses, cylinder lenses and a prism sheet and other optics equipment can be placed in front of people measure the patient's binocular vision and Qu

Light errors.

3.2

Head for measuring the refraction power of tolerance of positioning plane.

3.3

Optometry head reference plane and the distance between the corneal vertex.

3.4

The intersection of the optical axis of the lens on the lens surface.

3.5

Lenses and optical surfaces by changing the curvature or refraction through the ability to change the direction of the incident surface.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 19 pages — is available in the English PDF.

Referenced standards

Normative references

IEC 60601 · ISO 7944 · ISO 10993 · ISO 8429 · ISO 15004.1997

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