Description
What’s Included
- Haag-Streit BD 900 slit lamp biomicroscope
- Slit lamp table and base assembly
- Power supply and cables
- Yellow and blue filter set
- 90-day Digital Eye Center warranty
Condition & Warranty
Used. This Haag-Streit BD 900 has been inspected and verified for full illumination function, optical performance, and slit mechanism operation. Tonometer not included. Covered by a 90-day warranty on parts and workmanship.
Haag-Streit BD 900 Slit Lamp — Used Biomicroscope

Research published in the Journal of Clinical Medicine confirms that slit lamp-based gonioscopy and anterior chamber angle assessment remain the reference technique for angle evaluation in glaucoma diagnosis — one of the core clinical applications for the Haag-Streit BD 900 in ophthalmology practice.
Why Practices Choose the Haag-Streit BD 900
2-step magnification — 10× and 16× — lever-switched magnification delivers the two most clinically useful biomicroscopy powers; 10× for broad overview and lens/cornea survey, 16× for detailed anterior segment examination. Optional 25× and 40× available with 25× eyepiece upgrade.
- Halogen illumination — up to 300,000 Lux — the BD 900 halogen source delivers the high-intensity output needed for optical sectioning, specular reflection, and cobalt blue fluorescein examination across all slit configurations
- Full filter set — yellow, blue, and standard — yellow filter for IOP measurement with fluorescein applanation, cobalt blue for fluorescein staining pattern assessment, and standard diffuse for routine biomicroscopy
- C-Mount video port — built-in C-Mount adapter accepts a small camera via an internal prism diverter; image diverted to camera for documentation and anterior segment photography without external beam splitter required
- Variable slit illumination — adjustable slit width, height, and angle for optical sections, broad beam, specular reflection, and indirect illumination; all standard illumination modes required for complete anterior and posterior segment biomicroscopy
- Tonometer-free configuration — right price for practices with existing tonometry — the BD 900 without AT 900 is the correct choice for practices that own a non-contact tonometer, Goldmann tonometer on another unit, or any other IOP measurement device and need only the biomicroscope
- Haag-Streit optical standard at used pricing — used Haag-Streit BD 900 slit lamp at $8,300 provides the illumination quality and mechanical precision that Haag-Streit is known for, without new-instrument cost; 90-day warranty included
Clinical Applications
- Anterior segment biomicroscopy — corneal epithelium, stroma, and endothelial assessment; anterior chamber cell, flare, and depth evaluation; crystalline lens and IOL inspection — all standard anterior segment techniques at the BD 900 slit lamp
- Contact lens evaluation and fitting — slit lamp assessment of soft and RGP contact lens fit, fluorescein staining patterns, corneal desiccation, SEAL, and lens-related complications; the BD 900 is specifically optimized for contact lens practice use
- Gonioscopy — anterior chamber angle evaluation with a goniolens for angle-closure and open-angle glaucoma characterization; slit lamp gonioscopy at the BD 900 is the clinical reference for angle assessment
- Corneal disease examination — optical section evaluation of corneal pathology including ulcers, dystrophies, edema, abrasions, foreign body, and post-surgical changes requiring biomicroscopic characterization
- Posterior segment biomicroscopy — indirect biomicroscopy of the disc, macula, and peripheral retina using a 78D or 90D condensing lens; posterior segment evaluation at the BD 900 via condensing lens technique
Who This Is For
- Practices with existing tonometry — the BD 900 without tonometer is ideal for practices with a non-contact tonometer, Goldmann tonometer on another instrument, or any other IOP device who need only the slit lamp biomicroscope
- Optometry practices — contact lens and anterior segment focus — the BD 900 is specifically designed for optometrists and contact lens practitioners; its C-Mount video port and anterior-segment-optimized optics make it the standard biomicroscope in OD practices
- Ophthalmology practices adding a second slit lamp — the used BD 900 at $8,300 provides Haag-Streit quality for a second or third exam lane without new-instrument pricing
- Emergency rooms — Haag-Streit identifies the BD 900 as ideal for emergency room use; the straight-forward 2-step magnification and halogen illumination make it well suited to high-volume triage environments
Technical Specifications
| Spec | Detail |
| Manufacturer | Haag-Streit |
| Model | BD 900 |
| Magnification | 2-step: 10× and 16× (lever-switched); optional 25× and 40× with 25× eyepieces |
| Light Source | Halogen, up to 300,000 Lux |
| Filters | Yellow, cobalt blue; standard diffuse and specular modes |
| Video Port | Built-in C-Mount port with internal prism diverter |
| Illumination System | Variable slit — adjustable width, height, and angle; optical section, broad beam, specular reflection, indirect |
| Tonometer | Not included (AT 900 attachment available separately) |
| Condition | Used |
| Warranty | 90 days |
Compare Haag-Streit Slit Lamp Options
| Model | Magnification | Tonometer | Condition | Price |
| BQ 900 Slit Lamp | 5-step: 6×, 10×, 16×, 25×, 40× | Not included | Used | $9,400 |
| BM 900 + AT 900 | 2-step: 10× and 16× | AT 900 included | Used | $8,800 |
| BD 900 + AT 900 | 2-step: 10× and 16× | AT 900 included | Used | $8,690 |
| BD 900 Slit Lamp (this unit) | 2-step: 10× and 16× | Not included | Used | $8,300 |
Questions about the Haag-Streit BD 900? Contact us — we can confirm illumination condition, magnification function, and add a tonometer to your order if needed.





