KAT (T-Type) applanation tonometer
100 years of precision engineering – tonometry at its best
Discover the reliability of a Keeler Applanation Tonometer (KAT); a Goldmann tonometer designed and handmade in the UK by our team of ophthalmic instrument specialists.
Benefits:
- Made with high-quality precision machined components
- Enhanced reliability – stringent quality controls pre, during and after assembly
- Completely mechanical and non-battery powered device which does not require electrical power
- Reusable tonometer prism included
- Designed, engineered, and handmade in the UK
Description
Our GAT range uses the Goldmann method of measuring intraocular pressure (IOP), which is to calculate the force required to flatten (applanate) a constant area (3.06mm) of the cornea to aide in the screening and diagnosis of glaucoma.
Keeler applanation tonometers (KATs) are a versatile measurement device for a wide variety of lower and tower-illumination style slit lamps.
Usage overview
The KAT (T-Type is) a measurement device used to measure intraocular pressure which is one of the key biomarkers considered in diagnosing glaucoma. It is intended to be used by suitably trained and authorised healthcare professionals only.
We offer three variants of GAT. Designed to be used with tower-illumination H-style slit lamps, the R-Type is mounted on the optical body post for a secure fix, whilst the T-Type can easily be removed for wider use within a multiple slit lamp practice. Our newest KAT, the Z-Type is designed for use with lower-illumination style slit lamps.
As a T-Type, this unit can be mounted with a guide plate, making it fully removable for wider use within a multiple slit lamp practice.
Contents:
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- KAT (T-Type)
- Calibration arm assembly
- Guide plate (T-Type only)
- Reusable tonometer prism
- Instructions for use (IFU)
Watch this video to find out more:
For all documentation associated with this product including cleaning instructions, product support and instruction manuals, please visit our support page here


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