Presentation on theme: "AT 900 / AT 870 General Goldmann applanation tonometry is the gold standard for accurate and reproducible measurement of the intra ocular pressure. The."— Presentation transcript:
1AT 900 / AT 870 GeneralGoldmann applanation tonometry is the gold standard for accurate and reproducible measurement of the intra ocular pressure.The AT 900 tonometer fits all Haag-Streit slit lamps and most copies (contact Haag-Streit service for more information on adaptation possibilities). There are special mounts for every Haag-Streit slit lamp available, ensuring the best ergonomic operation of the tonometer on the slit lamp.The AT 870 tonometer fits most Zeiss-type slit lamps. In its “parked” position it does not interfere with normal diagnostic use of the slit lamp.Haag-Streit Goldmann applanation tonometers are the most cost efficient solution to measure intra ocular pressure. The competitive price, durability and minimal need for maintenance, paired with the reusable tonometer prisms, ensure a good return on investment. For use with infectious, or other “special”, cases we also offer a disposable prism – “Tonosafe”.
2Product Selection Tonometer model Slit lamp model AT 900® C/M AT 900® M/QAT 900® BQAT 870Tonometer modelSlit lamp modelAT 900® C/Mfor BD/BC for BM/BMV2)AT 900® M/Q3)AT 900® BQHammerscale RALAT870BD 900® / 1)BC 900®BM 900® / 1)BMV 900®BP 900®BQ 900®Zeiss and copies1) Discontinued slit lamp model 2) Also known as model R 3) Also known as model T
3Goldmann Principle too light applanation correct applanation Measurement of the force necessary to flatten a corneal surface of constant (ø 3.06mm) sizeDial indicatorForcePressure19.81 mN1.33 kPa = 10 mm Hg too light applanation correct applanation too heavy applanation decentred
4Accessories There is an accessory set available including: Fluorescein paper stripsPantasept disinfectant fluid concentratedInstruction manualAccessories for the AT tonometer seriesSet of accessories AT 900® M/Q - C/M - 870Set of accessories AT 900® BQMeasuring prismBox with 10 pads of Fluorescein paper stripsPantasept concentrate 100 cm3, disinfectant fluidPantasept concentrate 1000 cm3, disinfectant fluidDesinset V, accessories for disinfection of contact glassesand measuring prismsDesinset AT, accessories for disinfection of measuringprismsHow to clean tonometer measuring prisms (WWW – Link) (Open PDF)List of Haag-Streit approved disinfectants (WWW – Link) (Open PDF)
5Technical Specification AT 900® / AT 870Measurement PrincipleGoldmann Applanation: Measurement of the force necessary to flatten a corneal surface of constant (ø 3.06mm) size.Measuring force generatedAT 900: by leverage weight AT 870: by spring forceMeasuring range0 – 80 mm HgMeasurement uncertainty of the force on the measuring prism over a measuring range from 0 – mN0.49 mN 3 s 1.5% of rated valueReverse spanAT 900: 0.49 mNAT 870: 0.25 mNWeightAT 900 M/Q: kg AT 900 C/M: kg AT 900 BQ: kgAT 870: 0.850kg