Tonometers
Applanation Tonometer 900 & 870
Accurate & reproducible IOP measurements
Professor Goldmann's research into glaucoma led to the development of the first device for measuring intraocular pressure, the Applanation Tonometer 870 followed by the AT 900.
A comprehensive range of tonometer solutions for slit lamps
AT 870 | AT 900 model BQ / BP | AT 900 model R | AT 900 model T | |
---|---|---|---|---|
Measuring principle | ||||
Goldmann principle | ● | ● | ● | ● |
Measuring force generated | ||||
Through leverage weight | − | ● | ● | ● |
Via spring weight | ● | − | − | − |
Measurement range | ||||
Measurement range | 0 – 80 mmHg | 0 – 80 mmHg | 0 – 80 mmHg | 0 – 80 mmHg |
Meridian setting | ||||
Meridian setting | ● | ● | ● | ● |
Measurement deviation | ||||
The measurement deviation in the measuring prism is in the measuring range from 0 – 58.84 mN and amounts to a maximum of ±1.5% and to a minimum of ±0.49 mN of the nominal value. | ● | ● | ● | ● |
Working settings | ||||
Weight (kg) | 0.85 kg / 1.87 lbs | 0.78 kg / 1.72 lbs | 0.73 kg / 1.6 lbs | 0.49 kg / 1.08 lbs |
Width | ≤0.49 mN | ≤0.49 mN | ≤0.49 mN | ≤0.49 mN |
Working temperature | 10° to 35° C / 50°F to 95°F | 10° to 35° C / 50°F to 95°F | 10° to 35° C / 50°F to 95°F | 10° to 35° C / 50°F to 95°F |
Tonometer fixation | ||||
BQ 900 | − | ● | − | ● |
BP 900 | − | ● | − | ● |
BI 900 | − | − | ● | ● |
BM 900 | − | − | ● | ● |
BX 900 | − | □ | − | − |
Third party slit lamps | contact your local distributor | contact your local distributor | contact your local distributor | contact your local distributor |
Tonometer prisms | ||||
Goldmann tonometer prisms | ● | ● | ● | ● |
Tonosafe | ○ | ○ | ○ | ○ |
● standard | ○ optional | − not available | □ not recommended