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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

U.S.companies only
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1-5 of 5 Match(es).

AliMed Inc

Company Type: Parent

AliMed is an American manufacturing company and supplier of high quality products — everything from pre-formed orthoses, alarms for fall management, cushions, diagnostic imaging and operating room accessories, orthopedic rehabilitation equipment, ergonomic workplace solutions and emergency preparedness.

Belrose Refracting Equipment Co Inc

Company Type: Parent

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.

Fortrad Eye Instruments

Company Type: Parent

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.

Gulden Ophthalmics

Company Type: Parent

Nearly 75 years of experience have earned Gulden Ophthalmics a place as an undisputed thought leader and foremost expert in ophthalmic instruments and devices.As a leading innovator and sought after manufacturer of ophthalmic instruments and devices, Gulden supplies learning institutions and professionals worldwide, through a well-established national and international distributor network.

Richmond Products Inc

Company Type: Parent

Richmond Products, Inc was founded almost 60 years ago by P. Lloyd Powell (a former employee of Bausch & Lomb) and Ruth M. Powell to provide specialized Ophthalmic products to Bausch & Lomb. Over the years the product offering expanded as both Bausch & Lomb and American Optical discontinued smaller hand held testing devices used by Ophthalmologists and Optometrists

1-5 of 5 Match(es).


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