The AT555 tonometer: precision, comfort and automation for eye care professionals
The Reichert AT555 is a fully automated non-contact tonometer designed to quickly and accurately measure intraocular pressure (IOP) using a gentle puff of air. Unlike contact tonometers, which require the use of anaesthetics or consumables, the AT555 uses non-invasive, hygienic technology that eliminates the risk of cross-contamination and improves the patient experience.
This innovative device features an automatic alignment system that identifies and automatically adjusts to the visual axis of the patient's eye, without the need for manual adjustments by the operator. As soon as the patient's forehead comes into contact with the forehead rest, the device positions itself accurately and measures intraocular pressure in a matter of milliseconds, delivering a gentle puff of air through the nasal piece. This approach minimises patient stress while ensuring remarkable accuracy.
The measurement process is quick, simple and ergonomic, making it ideal for high-volume settings such as clinics, hospitals and optometry practices. The user is guided via a clear operator screen with an intuitive icon-based interface. Several functions are accessible at the touch of a button: measurement, printing, data deletion, air puff demonstration to reassure the patient, etc.
The AT555 supports single measurements or an average of three readings to increase the reliability of results. It can display values in mmHg or kPa, and allows you to configure the time, date, language and print formats. The device also features an RS-232C communication port for transferring data to a computer or medical record management system.
The compact and robust design of the device (43 cm high and weighing 13.6 kg) allows it to fit easily into any clinical environment. Maintenance is kept to a minimum: the forehead rest, positioning windows and external surfaces can be easily cleaned with a mild solution. A transport lock is included to secure the device when in transit.
In addition to its technical performance, the AT555 is equipped with safety features: it signals unreliable readings or situations where the eye is too close to the sensor, thus avoiding errors or discomfort. A "demo" function allows the air puff to be explained to the patient before the measurement is taken, encouraging cooperation.
Designed for continuous use and compliant with international medical safety standards, the Reichert AT555 is the benchmark non-contact tonometer for professionals seeking efficiency, safety and comfort in eye pressure measurement.