Description
What’s Included
- Haag-Streit BQ 900 Slit Lamp
- AT 900 Goldmann Applanation Tonometer
- Beam splitter
- Co-observation tube
- 90-day Digital Eye Center warranty
Condition & Warranty
Used. This Haag-Streit BQ 900 has been professionally inspected — optics verified for clarity, mechanical arm lubricated, and the unit confirmed fully operational. Some cosmetic wear is expected on used equipment. Covered by a 90-day warranty on parts and workmanship.
Haag Streit BQ 900 Slit Lamp — Used Gold-Standard Slit Lamp with AT 900 Tonometer
The Haag Streit BQ 900 slit lamp is the benchmark instrument in ophthalmic diagnostics — trusted by teaching hospitals, residency programs, and high-volume practices worldwide. This complete system includes the AT 900 Goldmann Applanation Tonometer, a beam splitter, and a co-observation tube, making it an ideal setup for clinics that require simultaneous viewing during examination or instruction. The Galilean optical system delivers a 5-step magnification range from 6.3× to 40×, covering every clinical scenario from wide-field anterior segment survey to detailed corneal endothelium work.
Goldmann applanation tonometry, performed through the integrated AT 900, remains the reference standard for intraocular pressure measurement in modern glaucoma management. A peer-reviewed study published in the National Library of Medicine confirms that Goldmann applanation tonometry consistently outperforms alternative methods in accuracy and reproducibility across diverse patient populations.
Why Practices Choose the Haag Streit BQ 900 Slit Lamp
- 5-step Galilean magnification (6.3×–40×) — The widest magnification range in Haag-Streit’s slit lamp line, covering routine anterior segment screening through high-magnification specular reflection in a single instrument.
- Integrated AT 900 Goldmann Applanation Tonometer — Factory-designed to mount directly on the BQ 900, providing accurate IOP readings without an adapter or separate instrument arm.
- Beam splitter with co-observation tube — Enables a second observer to view the same optical field simultaneously, essential for resident supervision, telemedicine documentation setups, and collaborative clinical decisions.
- Swiss precision mechanics — The joystick-controlled slit lamp base moves smoothly and precisely along all axes, with decades of operational life under daily clinical use.
- Continuous slit adjustment — Slit width adjustable from 0 to 8mm and slit length from 1 to 8mm, both continuously variable, supporting optical sections, diffuse illumination, and focal beam techniques.
- Multiple filter options — Blue, red-free, grey, yellow, UV, and heat-absorbing filters accommodate fluorescein angiography, contrast enhancement, and patient comfort.
- Immediate clinical deployment — Fully inspected, optics verified, and mechanically serviced before shipping. No calibration delay on arrival.
Clinical Applications
- Glaucoma management — IOP measurement via Goldmann applanation, optic nerve head assessment, and anterior chamber angle evaluation in a single workflow.
- Cornea and external disease — Corneal staining, infiltrate mapping, foreign body removal, and endothelial specular reflection using the full 40× magnification.
- Anterior segment surgery follow-up — Post-cataract, LASIK, and corneal graft surveillance at high magnification with precise slit angle control.
- Lens and vitreous examination — Retroillumination and slit beam techniques for nuclear sclerosis grading and anterior vitreous evaluation.
- Resident and student teaching — Co-observation tube enables real-time instruction and feedback during live patient examination.
- Fluorescein-guided diagnostics — Cobalt blue filter and continuous slit control support corneal epithelial mapping, contact lens fitting, and tear film assessment.
Who This Is For
- Ophthalmology practices seeking a flagship slit lamp at a fraction of new equipment cost.
- Residency programs and teaching institutions that need co-observation capability for trainee supervision.
- High-volume glaucoma clinics where a single integrated IOP workflow improves throughput.
- Multi-specialty eye centers that need one instrument capable of cornea, glaucoma, and surgical follow-up work.
- International buyers looking for reliable Haag-Streit optics with proven longevity at a competitive price.
Technical Specifications
| Specification | Detail |
| Model | BQ 900 |
| Brand | Haag-Streit |
| Optical System | Galilean |
| Magnification | 5-step: 6.3× / 10× / 16× / 25× / 40× |
| Slit Width | 0–8 mm continuous |
| Slit Length | 1–8 mm continuous |
| Tonometer | AT 900 Goldmann Applanation |
| Co-Observation | Included (beam splitter + observation tube) |
| Filters | Blue, red-free, grey, yellow, UV, heat-absorbing |
| Condition | Used |
| Warranty | 90 days — parts and workmanship |
Compare Haag-Streit Slit Lamp Options
| Feature | BQ 900 (This Unit) | BM 900 | Topcon SL-D701 |
| Optical System | Galilean | Galilean | Galilean |
| Magnification Steps | 5-step (6.3×–40×) | 2-step standard (10×/16×) | 5-step |
| AT 900 Tonometer | ✓ Included | ✓ Included | ✓ Included |
| Beam Splitter | ✓ Included | ✗ Not included | ✗ Not included |
| Co-Observation Tube | ✓ Included | ✗ Not included | ✗ Not included |
| Best For | Teaching, high-volume glaucoma | General practice | LED upgrade seekers |
Also consider the Portable Slit Lamp S2 for mobile screening or satellite clinic use.
Questions about the Haag Streit BQ 900 slit lamp? Contact us for availability and shipping details.
