DEVICE: AUTO REF/KERATO/TONOMETER (04987669100066)

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Device Identifier (DI) Information

AUTO REF/KERATO/TONOMETER
TONOREF II

NIDEK CO.,LTD.
04987669100066
GS1
1
AUTO REF/KERATO/TONOMETER Model TONOREF II is designed to singly perform objective refraction, corneal shape measurement, and non-contact tonometry measurement by incorporating a standard auto ref/keratometer and non-contact tonometer into one unit. The objective refraction function measures spherical powers, cylindrical powers and cylinder axis. The corneal shape measurement function measures the radius of corneal curvature (corneal refractive powers), the direction of the steepest meridian, and the amount of corneal astigmatism. The non-contact tonometry function measures the intraocular pressure without contacting the eye.
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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
Ophthalmic tonometer, line-powered An ophthalmic, line-powered, measuring instrument used for determining the intraocular pressure (IOP) by exerting an external force against the eye which provides a reading of the resistance of the tunica of the eye to deformation (the extent of corneal indentation) which is expressed in millimetre(s) of mercury (mmHg). It typically has no contact with the eye and can use various techniques, e.g., the air-puff tonometer records deflections of the cornea from a puff of pressurized air; the applanation tonometer records the indentation pressure in thousands of a second. It is used for the diagnosis of glaucoma, designed for table top use and may provide the data on a screen and/or a print-out.
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
HKX Tonometer, Ac-Powered
HKO Refractometer, Ophthalmic
HLQ Keratoscope, Ac-Powered
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Sterilization

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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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Device Status

In Commercial Distribution
June 24, 2016

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Alternative and Additional Identifiers Additional Identifiers

Package DI

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Unit of Use DI

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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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