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Aberrometers

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 a 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

   

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Carl Zeiss AG

Carl Zeiss AG

Carl Zeiss Canada Ltd

Carl Zeiss Canada Ltd

Carl Zeiss Co Ltd

Carl Zeiss Co Ltd

Carl Zeiss Ltd

Carl Zeiss Ltd

Carl Zeiss Meditec GmbH

Carl Zeiss Meditec GmbH

Carl Zeiss Meditec Inc

Carl Zeiss Meditec is an integrated medical technology company with two main areas of business activity.

Carl Zeiss Meditec Ltd

Carl Zeiss Meditec Ltd

Carl Zeiss MicroImaging LLC

The Carl Zeiss Group is an international leader in the fields of optics and optoelectronics. In fiscal year 2010/11 the company's approx. 24,000 employees generated revenue of about 4.237 billion euros. In the markets for Industrial Solutions, Research Solutions, Medical Technology and Consumer Optics, Carl Zeiss has contributed to technological progress all over the world for more than 160 years and enhances the quality of life of many people around the globe.

1-8 of 8 Match(es).

 

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