Applanation Tonometers (Applanation Tonometry)

Applanation tonometers are used to measure the Intraocular Pressure, or IOP, of the eye. IOP is often measured in millimeters of Mercury, (mmHg) and is determined by the amount of force that is needed to flatten, or applenate, a consistent area of the cornea. A topical anesthetic is often used because of the contact required.

The most widely accepted method is Goldmann Tonometry. A disinfected prism is placed on the tonometer and then placed against the cornea. With the use of a colbalt blue filter and a variable tension spring, IOP can be roughly measured with this less-invasive approach. Another method is Perkins tonometry, which is useful for children and anesthetized patients required to lay prone. Due to concern of cross-contamination between patients, some vendors are now offering one-time use prisms to rule out this risk.
CompanyReichert TechnologiesReichert TechnologiesReichert TechnologiesReichert TechnologiesReichert Technologies
ItemCT100 Contact TonometerCT210 Contact TonometerModel 30™ PneumatonometerTono-Pen AVIA® Applanation TonometerTono-Pen® XL Applanation Tonometer
Price
Dimensions (W × H × D)InquireInquire14 in. (35.6 cm) x 5.25 in (13.3 cm) x 10.5 in (26.7 cm)InquireInquire
Measurement Accuracy+/- 0.5 mmHg± 0.6 mmHgInquireInquireInquire
Air PumpInquireInquireInquireInquireInquire
WeightInquireInquire10 lbs. (4.54 kg)2.4oz. (71 g)2.1 oz (59.4 g)
Measurable RangeInquire0 - 80 mmHGInquireInquireInquire
Power SourceInquireInquireInquireTono-Pen AVIA Powercel Battery Pack2 Ocu-Cel XL Batteries
DescriptionThe CT100 allows for routine, accurate measurement of intraocular pressure. Can be mounted to any tower-style slit lamp and swings into position when required. The prism is viewed through the left microscope objective.The CT210 mounts on any compact-style slit lamp, the measurement arm swings down into position when IOP readings are required. The CT210 is permanently mounted and does not interfere with the normal diagnostic use of the slit lamp.The Reichert Model 30™ Pneumatonometer is an easy to use instrument that provides fast and accurate tonometry and optional tonography functions. The probe tip, which floats on an air bearing, is gently touched to the anesthetized cornea and a Reichert's Tono-Pen AVIA® Handheld Tonometer builds on all the features that make the classic Tono-Pen® XL the clinicians’ choice for the past 30 years. Calibration-free, the AVIA is always ready to provide fast, accurate and reliable IOP The Tono-Pen XL Applanation Tonometer is an easy-to-use, handheld instrument that provides IOP readings that correlate closely with Goldmann Tonometry. Tono-Pen XL's lightweight ergonomic design and advanced electronic measurement technology enable
Get quote