• Classic, robust design
• Easily mounted on your slit lamp
• Calibration verification rod included
• accuracy approx. + 0.5 mmHg
• Mount Included

• Mounts easily on slit lamp microscope
• Unique swing-down positioning
• Measurement Range: 0 – 80 mmHG
• Measurment Accuracy: + 0.5 mmHg
• Compact
• Made in the USA

• easy-to-use hand-held instrument
• readings that correlate strongly with Goldmann tonometry
• lightweight, ergonomic design
• advanced electronic measurement technology that enables operators to take fast and accurate IOP measurements with minimal training
• TONO-PEN AVIA is powered by a long-life TONO-PEN AVIA POWERCEL® battery pack, good for over 2,500 measurements.

• easy to use, hand-held instrument
• IOP readings that correlate closely with Goldmann Tonometry
• lightweight ergonomic design
• advanced electronic measurement technology enable operators to take fast and accurate IOP measurement with minimal training.
• Weighing only 2.25 ounces, TONO-PEN XL is extremely portable making it easier to take IOP measurements anywhere on any patient.