The Handheld Diaton Tonometer is a unique approach to measuring intraocular pressure (IOP) through the Eyelid. Non-Contact (no contact with cornea), no anesthesia or sterilization required, pen like, hand-held, Handheld Diaton Tonometer.

It is intended for use by Inpatient & Outpatient Clinics such as Hospitals, Emergency Rooms, Nursing & Elderly Homes, General & Specialty Practitioners as well as Ophthalmologists and Optometrists.*

The Handheld Diaton Tonometer provides high reliability of measuring results and makes it possible to diagnose glaucoma on the early stage and appoint necessary treatment and medicines.

The unique methodology of intraocular pressure measuring through the eyelid applied in the device provides new resources in ophthalmotonometry, simplicity and safety of tests. Transpalpebral "diaton" tonometer is effective and irreplaceable in various situations: * screening examinations of the patients * IOP control during selection of adequate medicines * IOP measuring in the presence in a patient of chronical conjunctivitis, erosions, edema and cornea dimness * IOP measuring in patients after corneal surgeries * ophthalmotone day monitoring * IOP measuring in immobilized patients and in children * IOP measuring during contact correction (lenses are not taken out).

Features	diaton	Goldmann Tonometer	Shiotz Tonometer	Air-jet	Tonopen®
No contact with the cornea	+
Portability	+		+		+
Displays independence from cornea's crookedness.	+
Digital IOP indication	+			+	+
Measurement in sitting position	+	+		+	+
Measurement in reclining position	+		+		+
Short-time measurement	+			+
Sterilization is not required	+			+
Anesthesia is not required	+			+

Comparison tests of handheld diaton tonometer tonometer and Goldman tonometer are the evidence of high reliability of diaton tonometer displays.

Measurement range, mm Hg	5-60
Measurement error	Limit of the admissible measurement error in the range, not more: from 5 to 20 mm Hg - ±2 mm Hg; from 20 to 60 mm Hg - ±10%
The time of a single measurement, s, not more	3
Supply voltage, V	3
Number of measurements using one battery set, not less	1500
Service life, not less	8
Weight, g	89
Dimensions, mm, not more	174 x 26 x 20

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