Description
Haag Streit BD 900 Slit Lamp w/ Rolling Table

Why Practices Choose the Haag Streit BD 900
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Built-in yellow filter — the BD 900 includes a built-in yellow barrier filter positioned at the front of the microscope for direct fluorescein contrast enhancement; essential for contact lens fitting evaluation, corneal staining assessment, and fluorescein-enhanced Goldmann applanation tonometry without additional filter accessories.
- 300,000-lux halogen illumination — single-column illumination arm delivers up to 300,000 lux at the slit; illumination intensity is continuously adjustable via a control positioned directly adjacent to the joystick for ergonomic single-handed operation during patient examination.
- Two-step magnification (10× and 16×) — flip-lever magnification selection provides two clinical levels: 10× for broad anterior segment survey and 16× for detailed corneal, lens, and anterior chamber examination at standard clinical working distances.
- Continuously variable slit (0–14 mm) — full-range slit width and height control for optical section, corneal evaluation, cell and flare grading, and contact lens staining pattern documentation.
- Single-column design for patient access — the BD 900’s single illumination column maximizes examiner access to the patient, particularly for slit lamp procedures requiring lateral approach such as gonioscopy and fundus lens biomicroscopy.
- Used pricing with Haag-Streit quality — the BD 900 at $8,690 used delivers Haag-Streit optical quality and Swiss manufacturing precision at significantly below new-equipment pricing, with a 90-day warranty.
Clinical Applications
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Contact lens fitting and evaluation — the BD 900’s built-in yellow filter enables direct fluorescein staining pattern assessment for rigid gas-permeable fitting, soft lens corneal staining evaluation, and contact lens-related complication detection without additional filter accessories.
- Anterior segment biomicroscopy — corneal epithelium, stroma, and endothelium examination; anterior chamber depth and cell/flare assessment; crystalline lens and IOL evaluation; routine comprehensive eye examination slit lamp work.
- Corneal disease examination — assessment of corneal pathology including edema, ulceration, dystrophies, and post-surgical changes using slit lamp optical section, specular reflection, and diffuse illumination techniques.
- Pre- and post-operative assessment — anterior segment documentation for cataract, refractive, and corneal surgery patients requiring slit lamp examination of pre-operative status and post-operative outcomes.
Who This Is For
- Contact lens practices — the BD 900’s built-in yellow filter and 14 mm slit are specifically valued for contact lens fitting and corneal surface evaluation; the most direct feature differentiator compared to other 900-series models.
- Optometry practices performing Goldmann tonometry — for ODs equipped to perform GAT, the BD 900 delivers Haag-Streit build quality and integrated tonometry at used pricing.
- Budget-conscious practices who want Haag-Streit — the BD 900 is the accessible entry point into the Haag-Streit 900 series, delivering the same Swiss-precision manufacturing and optical quality at below-BQ 900 pricing.
Technical Specifications
| Microscope Type | Convergent stereoscopic microscope |
| Magnification | 10x and 16x (integrated lever) |
| Light Source | LED (standard since 2018) / Halogen |
| Slit Width | 0 – 14 mm continuous |
| Slit Length | 1 – 14 mm continuous |
| Filters | Blue, Red-free (green), Grey (neutral density) |
| Illumination Tilt | Vertical tilt up to 20° |
| Imaging Ready | Compatible with Imaging Module IM 600 or IM 900 |













Built-in yellow filter — the BD 900 includes a built-in yellow barrier filter positioned at the front of the microscope for direct fluorescein contrast enhancement; essential for contact lens fitting evaluation, corneal staining assessment, and fluorescein-enhanced Goldmann applanation tonometry without additional filter accessories.
Contact lens fitting and evaluation — the BD 900’s built-in yellow filter enables direct fluorescein staining pattern assessment for rigid gas-permeable fitting, soft lens corneal staining evaluation, and contact lens-related complication detection without additional filter accessories.


