Kowa HA-2 Handheld Applanation Tonometer

The Kowa HA-2 is a portable handheld applanation tonometer designed for professional measurement of intraocular pressure using the recognized Goldmann prism principle.

Its internal single-spring mechanism allows measurements to be taken in different orientations, making the instrument suitable for seated, reclined or otherwise difficult-to-position patients. This versatility makes it particularly useful for domiciliary visits, bedside examinations, mobile services and as a backup tonometer in ophthalmology practices.

The HA-2 is compact, lightweight and well balanced, weighing approximately 240 g. Its ergonomic design enables one-handed operation, while the movable headrest helps stabilize the instrument during measurement.

An integrated light source permits use under different ambient-light conditions. Illumination is linked to the precision thumb wheel, which provides direct pressure readings without requiring conversion tables. The scale covers 0–60 mmHg in 1 mmHg divisions.

The instrument uses interchangeable standard tonometer prisms. An interchangeable long eyepiece with 3× magnification and other compatible accessories may also be available separately.

Key Features

• Goldmann applanation principle
• Handheld and portable design
• Measures intraocular pressure in different orientations
• Suitable for patients in different positions or postures
• Internal single-spring mechanism
• Direct pressure reading without conversion tables
• Measurement scale from 0 to 60 mmHg
• Fine 1 mmHg scale divisions
• Built-in illumination
• Illumination linked to the adjustment wheel
• 6× standard eyepiece magnification
• Movable headrest
• One-handed operation
• Compatible with interchangeable standard prisms
• Powered by standard replaceable batteries
• Suitable for domiciliary use or as a backup tonometer