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Ophthalmic Tonometers, Applanation

Definition : Ophthalmic tonometers designed to determine intraocular pressure by measuring the force required to flatten the cornea apex by a fixed amount. These instruments are typically small and reusable instruments and are attached to a slit lamp; the tonometer includes a tip to be applied to the cornea and a manually controlled spring that applies a variable force on the cornea through the tip. The application of the tonometer tip flattens the cornea, producing a thin circular outline that is split into two green semicircles when viewed through the slit lamp oculars; then the force applied is adjusted until both semicircles just overlap and the force value is shown in the instrument scale as pressure (typically in mm Hg). Handheld (electronic penlike devices) and pneumatic applanation tonometers (i.e., pneumatotonomers) are also available. Applanation ophthalmic tonometers (e.g., Goldman and Barraquer types) can measure the amount of force applied; they 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 : "Applanometers" , "Applanation Tonometers" , "Pen-Like Electronic Applanation Tonometers" , "Applanation Tonographs"

UMDC code : 10168

   

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Accutome Inc

Accutome is entering our fourth decade in the ophthalmic industry. The three major traits that keep the Accutome brand growing remain the same: Superior Customer Service, Quality, Innovation. It is our goal to make each and every experience a special one.

Alcon Canada Inc

Alcon Canada Inc

Alcon Grieshaber AG

Alcon Grieshaber AG

Alcon Inc

Alcon Inc

Alcon Laboratories Inc

Alcon is helping people see the world better through advanced surgical, pharmaceutical and vision care products. We serve eye care professionals and their patients in more than 180 countries, reaching 90% of the globe, to help millions of people see the world better with clarity, color and beauty. At Alcon, we enhance sight to enhance life

Alcon Pharma GmbH

Alcon Pharma GmbH

Alcon SA Laboratoires

Alcon SA Laboratoires

Allgaier Instrumente GmbH

Allgaier Instrumente GmbH

Almedic

Almedic

Amcon Laboratories

Amcon, The Eyecare Supply Center has been serving the eye care industry for 31 years. In that time Amcon has evolved from a contact lens supply company to a major manufacturer and distributor of optical, laboratory, exam, contact lens, children's and laser vision products.

Appasamy Assoc

Appasamy Assoc

B & H Optical

B & H Optical

Bausch & Lomb Surgical Inc

Bausch + Lomb is solely dedicated to protecting and enhancing the gift of sight for millions of people around the world – from the moment of birth through every phase of life. Our mission is simple yet powerful: Helping you see better to live better.

Bausch and Lomb Australia Pty Ltd

Bausch and Lomb Australia Pty Ltd

Bausch and Lomb China Inc

Bausch and Lomb China Inc

Bausch and Lomb Eyecare (India) Pvt Ltd

Bausch and Lomb Eyecare (India) Pvt Ltd

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

Canon Europa NV

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.

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