Carleton Optical is the exclusive UK supplier and servicing agent for the Reichert Tono-Pen range, the Takagi Goldmann-type applanation tonometer and projection perimeter, as well as the Ziemer Pascal dynamic contour tonometer. We also distribute the Visionix L900 Tonojet disposable tonometer prisms.
The award winning Reichert TONO-PEN AVIA is an easy-to-use handheld tonometer with a lightweight, ergonomic design and advanced electronic measurement technology that enables operators to take fast and accurate IOP measurements that correlate strongly with Goldmann tonometry with minimal training.
Unlike applanation tonometers, which are influenced by corneal thickness and other characteristics of the cornea, and hence may produce misleading estimates of IOP, the Ziemer PASCAL provides an accurate, direct measurement of true IOP which is independent of inter-individual variations in corneal properties and biomechanics. IOP measurement is accurate even on post-LASIK and keratoconic eyes.The Visionix Tonojet disposable tonometer prisms offer a convenient, yet affordable alternative, eliminating the risk of cross infection, the danger of improper disinfection and the need for a reusable prism mount.