AT 900 Model BP/BQ
The Applanation Tonometer AT 900, for the Haag-Streit BQ and BP slit lamps, has a working position and two resting positions. To set the correct angle of incidence of the illumination, the tonometer is swiveled and the illumination apparatus is positioned to the left of the tonometer bracket. In this position, the patient’s left and right eyes can be easily examined (no 60° position). The applanated surface is observed monocularly through the right eyepiece of the stereomicroscope.