DEVICE: AUTO REF/KERATOMETER (04987669100738)

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Device Identifier (DI) Information

AUTO REF/KERATOMETER
ARK-1s

NIDEK CO.,LTD.
04987669100738
GS1
1
The NIDEK AUTO REF/KERATOMETER ARK-1s measures spherical, cylindrical refractive errors, and cylinder axis from the refractive status of the patient’s eye. In addition, subjective test is performed with the built-in charts and lenses for subjective measurement. The keratometer measures the corneal curvature radius (corneal refractive power), principal meridian directions, and corneal cylindrical power.
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Device Characteristics

Labeling does not contain MRI Safety Information
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GMDN

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GMDN Names and Definitions: © Copyright GMDN Agency 2015. Reproduced with Permission from the GMDN Agency.

GMDN Preferred Term Name GMDN Definition
Keratometer A mains electricity (AC-powered) ophthalmic instrument designed to measure the curvature of the anterior surface of the cornea, particularly for determining the presence, extent, and axis of astigmatism (an error of refraction in the eye due to the cornea being unequally curved in different directions, so that rays of light in different meridians cannot be brought to focus together on the retina). It actually measures the radius of curvature in millimetres but typically displays it in dioptres. It is used mainly for contact lens fitting and for intraocular lens power determination prior to cataract surgery. This device is also known as an ophthalmometer.
Ophthalmic refractometer, automated A mains electricity (AC-powered), automated, ophthalmic device designed to measure the refractive error of the eye (the inaccuracies of focusing of light upon the retina) by measuring how light is changed when it enters the patient's eye(s). A beam of light is emitted from the device into the patient's eye and reflected back out where it is detected and measured for sphere, cylinder and axis, as well as high order aberration measurements; typically measured in dioptres (the reciprocal of the focal length of the lens expressed in metres). Using this information, the device, also known as an aberrometer, will automatically calculate the lens prescription needed to correct the patient's vision.
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FDA Product Code

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Product Code Product Code Name
HLQ Keratoscope, Ac-Powered
HKO Refractometer, Ophthalmic
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Sterilization

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Sterilization Method [?]
No Sterilization Methods Found
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Storage and Handling

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Storage and Handling
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Clinically Relevant Size

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Size Type Text
No Device Sizes
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Device Status

In Commercial Distribution
August 10, 2016

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Alternative and Additional Identifiers Additional Identifiers

Package DI

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Package DI Number Quantity per Package Contains DI Package Package Discontinue Date Package Status Package Type
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Secondary DI

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Unit of Use DI

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Unit of Use DI Number: No Unit of Use DI Numbers Found CLOSE

Direct Marking (DM)

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Production Identifier(s) in UDI

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Customer Contact

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1-800-223-9044
info@nidek.com
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