Definition : Ophthalmic measuring instruments designed for determining aberration by measuring the direction of light rays reflected from the eye and reconstructing the wavefront. Instruments that use several different technologies are available. An instrument based on the Hartmann-Shack principle consists of a light source (most often a laser); a wavefront sensor, made of an array of micro-lenses (known as lenslets) that spilt the wavefront into a number of light spots to be focused on a charge-coupled device (CCD) camera; computer data processing capabilities and a display for the result. Other aberrometers use the ray tracing principle and consist of a light source (most often a laser), a lens system, an x-y scanner, a beam splitter, and a photodetector to project a series of beam of light into the eye sequentially and to capture the retinal images of the light. Aberrometers are mainly used to plan laser refractive surgery and for lens fitting.

Entry Terms : "Wavefront Analyzers" , "Ophthalmic Aberration Measuring Instruments" , "Aberration Measuring Instruments, Ophthalmic" , "Ophthalmic Measuring Instruments" , "Measuring Instruments, Ophthalmic"

UMDC code : 24553

U.S.companies only
Suppress Subsidiary Companies

1-4 of 4 Match(es).

Boston Micromachines Corp

Company Type: Parent

Katena Products Inc

Company Type: Parent

Katena Products, Inc. is the largest independently owned American company dedicated exclusively to ophthalmic surgical instrumentation. Katena offers its products to over 7,000 customers in the United States and, through a global network of distributors, to customers in more than 100 countries around the world.

Veatch Ophthalmic Instruments

Company Type: Parent

Founded in 1988, Veatch Ophthalmic Instruments established itself as a distributor of traditional exam lane equipment, offering top notch knowledge and service to professional nationwide. Seeing the opportunity in the marketplace for new and more efficient ophthalmic technology solutions, Veatch branched out in 1992 to create ReSeeVit digital imaging. ReSeeVit pioneered a new digital imaging concept which had an immediate and positive impact in the ophthalmic equipment market.

WaveTec Vision

Company Type: Parent

1-4 of 4 Match(es).


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