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Ophthalmic Tonometers, Indentation

Definition : Ophthalmic tonometers designed to determine intraocular pressure by measuring the corneal indentation produced by a known weight. These instruments are typically handheld and reusable (known also as Schiotz tonometers); they have a main body consisting of a cylinder hollow barrel with a movable plunger fixed to a measuring scale that includes an indicator pointer (i.e., needle), a weight screwed in the proximal end of the plunger opposite to the working end, and a handle. When the force produced by the attached weight pressed to the cornea produces a small indentation, the corneal resistance (that is proportional to the intraocular pressure) displaces the plunger upward within the barrel, deflecting the pointer on the measuring scale. Indentation ophthalmic tonometers are intended mainly for assessing ocular hypertension (intraocular pressure between 10 and 24 mm Hg is considered normal), usually to screen patients for glaucoma.

Entry Terms : "Indentation Tonometers, Ophthalmic"

UMDC code : 24810

   

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Alcon Canada Inc

Alcon Canada Inc

Alcon Grieshaber AG

Alcon Grieshaber AG

Alcon Inc

Alcon Inc

Alcon Laboratories Inc

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Alcon Pharma GmbH

Alcon Pharma GmbH

Alcon SA Laboratoires

Alcon SA Laboratoires

AliMed Inc

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Allgaier Instrumente GmbH

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Almedic

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B & H Optical

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Bausch & Lomb Surgical Inc

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Bausch and Lomb Australia Pty Ltd

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Belrose Refracting Equipment Co Inc

Belrose Refracting Equipment Co. has been a leader in the optical industry for the finest in new and reconditioned ophthalmic and laboratory equipment. We have continued our tradition of quality instruments by pursuing purchases of the best brands possibly available.

BiCOM Inc

Home of Diaton Through Eyelid Tonometer - BiCOM is committed to the global fight against blindness caused by glaucoma. A unique team of engineers, medical, legal and business experts makes BiCOM Inc. uniquely placed to provide DIATON diagnostic tonometer, making it possible to diagnose glaucoma on the early stage and appoint necessary treatment and medicines and provide a much more favorable outcome for the patient More about DIATON Tonometer Glaucoma Eye Test at http://www.TonometerDiaton.com

BioHorizons Canada

BioHorizons Canada

BLJ Co Ltd

BLJ Co Ltd

Canon Europa NV

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Canon Medical Systems

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Carl Teufel GmbH & Co KG

Carl Teufel GmbH & Co KG

Carl Zeiss AG

Carl Zeiss AG

Carl Zeiss Co Ltd

Carl Zeiss Co Ltd

Carl Zeiss Meditec GmbH

Carl Zeiss Meditec GmbH

Clement Clarke International Ltd

Clement Clarke International Ltd

Crestpoint Management Ltd

Crestpoint Ophthalmics (previously Duckworth & Kent USA Ltd.) is your source for premium surgical devices. We support you with our superb reputation of finding the best products for your needs.

Eisenhut Instrumente GmbH

Eisenhut Instrumente GmbH

ERBE Elektromedicina d o o

ERBE Elektromedicina d o o

Fortrad Eye Instruments

GrohnFortrad Eye Instruments was founded in 1982 by Karl and Inge Grohn with the goal of providing high-quality-at-low-prices products. For over a quarter of a century, Fortrad has helped many US, Canadian, and worldwide customers reduce their costs without any quality sacrifice.

Gerhard Biro Medizinische Apparate

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