The Icare Tonometer

The Icare® tonometer is based on a new measuring principle, in which a very light probe is used to make momentary contact with the cornea. The measurement is barely noticed by the patient and often does not even cause corneal reflex. For ophthalmologists this is good news, because the device not only makes IOP measuring a more pleasant experience on all patients, it is also an important break-through for succeeding with non-compliant patients (f.e. children and dementia patients).

The easy usage and dynamic patient flow obtained by the Icare® tonometer make it a very important instrument for general practitioners, optometrists, occupational health care and other medical personnel.

Requiring no drops, neither specialized skills for its use the quick and painless Icare® tonometry has an important role in glaucoma screening programs of masses.

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Rebound Technology in Intra-ocular Pressure Measurement

Icare rebound tonometer was developed to find a new method of measuring intraocular pressure. It is a major breakthrough obtained after a decade of development work by Finnish MD Antti Kontiola. The realization of the rebound method and its equipment has involved a number of partners, including the Helsinki University Eye Clinic in the clinical testing, and the Mount Sinai Medical School in the US in developing the veterinary modification of the instrument.

Owing to the unique, carefully studied and tested measurement technique, local anesthesia is not required. An ultra light, sensitive probe touches the eye only for a fleeting moment. It is hardly noticed by the patient and causes no corneal reflex (blinking). The disposable probe is also safe for the eye in microbiological terms.

The accurate measurement device is primarily intended for professional use by ophthalmologists, general practitioners, optometrists, opticians, nurses and other health care personnel, but it can also be used in self-care. The portable, compact Icare instrument is ideally suited for use on children and other challenging patient groups. Made of durable plastic and anodized aluminum, the device is light and small.

Comfort and ease of use in different positions have been taken into account. The device employs an electromagnetic field, and the disposable probe is easy to change. The possible movement of the patient during investigation will not affect the result on the instrument. The streamlined design of the device expresses safety and reliability and will not intimidate patients.

Maintenance

CLEANING THE PROBE BASE
Probe base can be cleaned by removing it from the tonometer and injecting ethyl or isopropyl alcohol through the probe base with a syringe. Before mounting the tube back into the tonometer make sure the tube has dried properly. Drying can be accelerated by injecting air through the probe base using a syringe or canned air.

BATTERIES
Always use good quality non-rechargeable batteries. Rechargeable batteries supply lower voltage and are not compatible with the Icare tonometer. Make sure batteries are loaded correctly; + terminals should oint down on the display side and up on the measurement side.

STORAGE
When the tonometer is not in use place it in the case or desktop stand, which protects the probe base from dust and other particles.

Certifications & Approvals

CE approved 2003
ISO 13485 certified 2005

TÜV Nord CERT GmbH is a TÜV CERT certification body.
US FDA approved 2007 (510(k) -number K063873)
Chinese SFDA approved 2008

Complies with:
Medical Device Directive 93/42/EEC
Canadian Medical Device Regulations

	Patent name	Patent nbr	Priority date
1	A method and a device for measuring iop	JP3638953	30.08.1994
2	A method and a device for measuring iop	FI109269	23.07.1997
3	Apparatus for measuring iop	US6093147	22.02.1999
4	Method for measuring iop	EP1545294	17.06.2002
5	Apparatus for measuring iop	EP1513442	17.06.2002
6	Method for measuring iop	JP2004-512597	17.06.2002
7	Apparatus for measuring iop	JP2004-512596	17.06.2002
8	Method for measuring iop	US20050 137474	17.06.2002
9	Apparatus for measuring iop	US20050 137473	17.06.2002
10	Arrangement in a tonometer	WO20060 67266	21.12.2004

BROCHURES
Icare Tonometer brochure in English (600 kb)

FLYERS

IOP & Glaucoma facts (pdf, 1-sided A4)

Icare & Pediatric Ophthalmics (pdf, 2-sided A4)

MANUALS

Icare tonometer manual in 12 languages (4mb)

FAQ

IS THE MEASUREMENT PAINLESS?
Measurement is painless, the light-weight probe touches the cornea momentarily and some patients don't even notice the measurement.

IS IT POSSIBLE TO HURT THE EYE?

If the device is used according to the instructions given in user manual, the light-weight probe cannot cause any damage to the patient's eye.

IS THE MEASUREMENT RESULT ACCURATE?

Several independent studies prove the accuracy of Icare readings. Extensive bench testing and clinical studies have also been performed to ensure the accuracy and repeatability of measurements.

WHY SIX MEASUREMENTS?

Six measurements are required to provide accurate measurement results by eliminating the variations caused by operator error and heart rate.

DOES ICARE TAKE INTO CONSIDERATION CCT?

Icare tonometer is calibrated for average CCT just like the Goldmann tonometer.

CAN ICARE BE USED WITH CONTACT LENSES?

Yes, but depending on the type of contacts the tonometer readings may be affected by the contact lens. Soft daily disposable lenses (and some soft 2-week or monthly lenses) affect the reading only slightly. Hard contact lenses have a significant effect on the reading and should not be worn when measuring the IOP with Icare tonometer. For most accurate measurement results use of any contact lenses is not recommended.

CAN ICARE BE USED AFTER EYE SURGERY?

Yes, but consider that some of surgeries e.g. LASIK and similar surgeries may change the thickness of the cornea (thinner cornea => lower /false IOP)

CAN ICARE BE USED WHEN THE EYE IS INFECTED?
Yes. Just remember that the probe used to measure the infected eye cannot be used again, even for measuring the non-infected eye of the same patient.

DOES THE CORNEAL SHAPE AND RADIUS INFLUENCE THE IOP READING TAKEN WITH ICARE?
No. The area of contact is so small, that the measurement is not influenced by these aspects.

CAN ANESTHESIA STILL BE USED?

Icare is designed to be used without applying topical anesthetic. For most accurate measurements, we recommend not to apply topical anesthetic when measuring with Icare tonometer. It is possible to measure anesthetized eye but the readings may be affected by the swelling caused by topical anesthetic.

IS IT POSSIBLE TO LOAD PROBE WRONG WAY?

No, it's not possible to load the probe wrong way. The mechanical design of probe and probe base makes it possible to insert the probe in a correct way.

CAN I RE-USE THE PROBES?

Icare tonometer uses single-use disposable probes. Probes should never be cleaned or sterilized because the process and handling can damage the probe resulting in unreliable measurement results or even damage the tonometer. However, same probe can be used for measuring the same patient within reasonably short time period.

CAN SAME PROBE BE USED TO MEASURE BOTH EYES OF ONE PATIENT?

Yes, same probe can be used to measure both eyes of one patient if the patient's eyes are healthy. If the patient has infection in one eye or if there is any doubt that one eye may havea disease that can be transferred from eye to eye, the healthy eye should be measured first. A probe used to measure an infected eye should never be usedto measure a healthy eye. If in doubt, always use a new probe.

HOW PROBES WILL BE DISPOSED OF?

Probes can be disposed of according to the hospital/clinic/practice standard regulations.

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