Pascal
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Dynamic Contour Tonometer

Ziemer Group We develop and produce diagnostic and surgical products for the ophthalmic market that distinguish themselves from established standards in terms of usability, precision, quality, and productivity. The PASCAL Dynamic Contour Tonometer (DCT) is a third-generation, digital, contact tonometer for ophthalmological applications. The slitlamp mounted device furnishes a numeric output of intra-ocular pressure (IOP) and of ocular pulse amplitude (OPA) upon touching the cornea for a few seconds. It measures pulsatile IOP directly and continuously (dynamically). 1 2 3 PASCAL‘s main...

Features • Direct measurement of pressure eliminates systematic errors from force-to• • • • • • • • • • pressure conversion. Numerical display of result on LCD screen avoids operator bias and reading errors. Audio feedback during measurement aids alignment and data taking. Completely objective measurement – no mires to align! Quality reading (“Q score”) avoids erroneous readings due to poor data quality. Automatic end-point detection terminates measurement when pre-set quality score is reached. Attaches to slitlamp like the familiar Goldmann tonometer. No need for fluorescein. Room lights...

How the PASCAL Tonometer works PASCAL is always ready for operation; simply swivel it into place before the patient’s eye, zero the pressure sensor with a single click of the Blue Knob, advance the SensorTip to rest against the patient’s eye. After a few seconds a sound will tell you that sufficient data have been collected. Pull back now, and immediately you will see the numerical result, precise and unambiguous, on the PASCAL’s illuminated LCD display. When the concave surface of the SensorTip touches the corneal surface, a solid-state piezoresistive pressure sensor, built flush with the...

The PASCAL is the most accurate tonometer ever designed. Every Study done to date supports the accuracy of the PASCAL Dynamic Contour Tonometer, including multiple independent intracameral cannulation studies done at the time of cataract surgery. Comparison plot of intracameral manometric measurement (yellow curve) and trans-corneal measurement with the PASCAL Dynamic Contour Tonometer (blue curve). Courtesy of A.G.Boehm, MD, Department of Ophthalmology, Dresden, Germany. True IOP. No doubt. “For my diagnostic decisions, the PASCAL is much more important than Pachymetry or correction...

Technical Data • Class IIa medical device. CE-marked. FDA 510(k) • • • • • • • • • • • • • • Accessories, Consumables: cleared. • Device mounts on tonometer bracket or accessory footplate of slitlamp. • Dimensions: Housing: 170 mm (H) × 88 mm (W) × 40 mm (D) Weight: ca. 210 grams. Display of results: backlit LCD 58 × 24 mm (2.2‘ by 1‘) Detection range: IOP 5 – 80 mmHg; OPA >1.0 mmHg (numerical precision ±0.2 mmHg). Analog/digital conversion: 100 Hz sampling rate; 12 bit resolution. • • • Slitlamp adapter kit (required for different types of slitlamp attachment; please check with your...