Mentor O&O Tono-Pen XL

This used Mentor O&O Tono-Pen XL is a handheld electronic applanation tonometer built around the same trusted measurement principle as its Tono-Pen predecessors, offering fast and portable intraocular pressure testing without the need for a slit lamp setup. The instrument takes multiple momentary applanations against the cornea through a disposable latex tip cover, then statistically analyzes the readings and displays a single averaged IOP value along with a confidence indicator so the clinician can judge the reliability of the result. Its lightweight, pen-shaped housing and simple one-button operation make it easy to use across a wide range of patients, including those who have difficulty positioning at a traditional tonometer. In daily practice, the Tono-Pen XL is used for glaucoma screening and monitoring, post-operative pressure checks, and general IOP assessment in optometry and ophthalmology offices, as well as in emergency and inpatient settings where portability matters. Because it does not require the patient to be seated at a slit lamp, it is well suited to bedside exams, pediatric patients, and situations where positioning is limited. The device's digital readout and audible tone provide immediate feedback during the measurement sequence, helping streamline the exam without slowing down patient flow. Sold as a pre-owned unit, this Tono-Pen XL is a practical option for practices looking to add tonometry capability at a lower cost than a new instrument, whether as a primary device for a smaller clinic or as a spare for a busier one. As with any handheld tonometer of this vintage, buyers should plan to supply new disposable tip covers and confirm battery condition and calibration status before placing the unit into regular clinical service.