Goldman 900 Tonometer Tips

The Goldmann 900 Tonometer is a precision medical instrument made by Haag-Streit International, a Swiss manufacturer of diagnostic equipment for ophthalmologists, optometrists and opticians. An accessory to the slit lamp, which emits a beam of light for examination of the retina and optic nerve, the applanation tonometer measures intraocular pressure, or the pressure inside the eye. Dr. Hans Goldmann, a distinguished scientist and pioneer in the field of ophthalmology, invented and developed the applanation tonometer.

Installation Tips

• Installation procedures and fitting dimensions vary slightly with each Goldmann 900 tonometer model. For example, a small screwdriver and a 5 mm Allen key are required for the installation of the 900 BQ model -- but not for the 900 M/Q or 900 C/M models. Note your model type and follow installation guidelines carefully for your model, especially if mounting the tonometer onto other manufacturers' equipment.

Safety Tips

• Only trained and qualified personnel should operate an applanation tonometer; proper training is the owner's responsibility. Incorrect operation can damage your instrument. Warranty claims will not be accepted by the manufacturer if the instrument has been used improperly. Continued use of a tonometer that is damaged by improper operation may lead to personal injury. Improper operation and unauthorized repairs may reduce the accuracy of the measurement. Repairs and alterations on your instrument should be carried out by your Haag-Streit distributor.

Operating Tips

• Review the safety precautions in the instruction manual before using the instrument. While you can mount the Goldmann 900 tonometer onto equipment made by other manufacturers, keep in mind that proper function can be guaranteed only with the use of an original Haag-Streit measuring prism. Applanation tonometers must be used at room temperature and solely for the examination, evaluation and diagnosis of the human eye. Applanation tonometry should be performed by a licensed health-care professional who is qualified to do so.

Maintenance Tips

• Maintenance procedures in the instruction manual outline the steps for upkeep and disinfection, as well as routine checking of calibration and drum settings. You should check the calibration markers against the index markers once per month. If you find errors, make sure the measuring prism is properly inserted. Also, ensure that the check weight is properly adjusted. Any malfunctioning equipment should be returned directly to your Haag-Streit distributor for repair or replacement.