Haag-Streit Perkins Tonometer

This used Haag-Streit Perkins tonometer is the well known handheld applanation tonometer that allows clinicians to measure intraocular pressure without requiring the patient to be seated at a slit lamp, making it especially valuable for bedside exams, pediatric patients, and cases where an upright slit lamp measurement is not practical. Operating on the same Goldmann applanation principle as its tabletop counterparts, the Perkins design uses a counterbalanced mechanism and built in illumination so readings can be taken with the patient lying down or seated in a wheelchair. This portability has made it a longstanding favorite in hospital wards, surgical centers, and mobile eye care settings. The unit being offered has seen genuine clinical use and shows some cosmetic wear typical of a handheld instrument that has traveled between exam rooms, but it remains mechanically sound and ready for continued service. The illumination source, prism, and counterweight mechanism all function as designed, allowing for accurate applanation readings consistent with standard Goldmann methodology. Its self contained, battery powered design means no slit lamp or external mounting is required, offering exam flexibility that fixed tonometers cannot match. This Perkins tonometer suits ophthalmologists, optometrists, and hospital based eye care teams who need a dependable portable option for glaucoma screening outside the traditional exam chair. As with any pre owned tonometer, we recommend confirming calibration against a certified test bar before placing the unit into regular clinical rotation.