Description
What’s Included
- Haag Streit BM 900 LED slit lamp with integrated AT 900 applanation tonometer (as photographed)
- Power cord (as supplied)
- Tested in good working order, cleaned and calibrated; optics clean, lamp lubricated
- 90-day Digital Eye Center warranty
Note: per the source listing, “Everything shown with the unit comes with it” — refer to the product photos for the exact configuration. No additional accessories beyond what is photographed are included.
Condition & Warranty
Used. Tested in good working order. Cleaned and calibrated before listing — optics confirmed clean and lamp lubricated. The unit has some visible signs of usage consistent with normal clinical service (visible in the product photos). Mechanical and illumination function verified before shipping. Covered by a 90-day warranty on parts and workmanship.
BM 900 Slit Lamp — Used Haag Streit System with LED Upgrade
The Haag Streit BM 900 has been the workhorse anterior-segment slit lamp in clinical practice for over five decades, and this used BM 900 slit lamp includes the LED illumination upgrade that replaces the original halogen bulb with a high-output, color-stable LED light source. Paired with the AT 900 applanation tonometer, the system gives you Goldmann-grade IOP measurement with the optical clarity Haag Streit has built its reputation on.
This bm 900 slit lamp uses a 2-step magnification changer (10× and 16× standard, with optional 25× and 40× eyepieces available separately), a continuous slit width 0–8 mm, and a 13° stereo angle convergent microscope. The LED upgrade delivers up to 600,000 Lux of illumination — currently the brightest in any production slit lamp — and eliminates the bulb replacement cycle that interrupts workflow on halogen units.
Per a recent National Library of Medicine-indexed study (Indian J Ophthalmol, 2025), slit-lamp-mounted Goldmann applanation tonometers like the AT 900 remain the clinical reference standard for IOP measurement, with concordance superior to handheld and rebound alternatives.
Why Practices Choose the BM 900 LED System
LED illumination, 600,000 Lux — color-stable white light with no warm-up time, no bulb replacements, and ~30,000-hour service life vs. roughly 100 hours on legacy halogen.- Parallel optics + 13° stereo angle — the optical signature Haag Streit is known for. Long depth of field, high light transmission, and a fatigue-free view across a full exam day.
- Goldmann AT 900 tonometer integrated — the original applanation reference, mounted on the slit lamp arm for single-instrument IOP at 10× magnification.
- 2-step magnification (10×/16×) — the exam-room standard for routine anterior segment work; optional 25×/40× eyepieces drop in if you need detail magnification.
- Built to last decades — known in the field as the “indestructible” slit lamp. Mechanical simplicity means parts availability and service economics that no plastic-shrouded competitor can match.
- Filter set included — cobalt blue, red-free (green), and 10% grey filters in the rotating filter wheel for fluorescein, hemorrhage detection, and bright-eye comfort.
- Universal Haag Streit footprint — fits any standard Haag Streit instrument table and works with all BQ/BP/BM/BD-series accessories you may already own.
Clinical Applications
- Routine anterior segment exams — cornea, conjunctiva, lens, anterior chamber
- Goldmann applanation tonometry for glaucoma screening and follow-up
- Contact lens fitting and corneal staining assessment with cobalt blue + fluorescein
- Pre- and post-operative cataract and refractive surgery evaluation
- Foreign-body localization and removal under high-contrast LED illumination
- Dry eye assessment with red-free filter and high-magnification eyepieces (with optional 25×/40×)
Who This Is For
- Optometry and ophthalmology practices replacing an aging halogen slit lamp without compromising on optics
- Practices that want to standardize on the Haag Streit ecosystem (AT 900, BQ/BP/BD accessories, fundus modules) but at a used price point
- Clinics in high-throughput environments where halogen bulb downtime is a real workflow cost
- Group practices needing a second exam-lane slit lamp that matches the optical quality of an existing BQ 900
Technical Specifications
| Spec | Detail |
| Magnification | 2-step: 10× and 16× (optional 25× / 40× eyepieces) |
| Microscope | Convergent, stereoscopic, 13° stereo angle |
| Illumination | LED upgrade — up to 600,000 Lux |
| Slit width | 0–8 mm continuous |
| Slit length | 1–8 mm continuous + fixed apertures |
| Illumination field diameters | ø 8, 5, 3, 2, 1, 0.2 mm + test mark + fixation star |
| Filters | Cobalt blue, red-free (green), 10% grey |
| Tonometer | Haag Streit AT 900 applanation (Goldmann), mechanical, no power required |
| AT 900 measuring prism | PMMA |
| Compatibility | Standard Haag Streit instrument table; works with BQ/BP/BD accessories |
| Condition | Used — inspected, calibrated, exam-ready |
| Warranty | 90 days (parts and workmanship) |
Compare BM 900 Slit Lamp Options
| Feature | BM 900 LED + AT 900 (this listing) | BM 900 + AT 900 (non-LED) | BQ 900 + AT 900 | Topcon SL-D8Z + AT 900 |
| Illumination | LED, 600,000 Lux, ~30,000 hr | Halogen, ~100 hr bulb cycle | LED, 600,000 Lux | LED |
| Magnification | 2-step (10×/16×) | 2-step (10×/16×) | 5-step (6.3×/10×/16×/25×/40×) | Continuous zoom 6×–40× |
| Microscope tilt | Fixed | Fixed | Tilting microscope | Fixed |
| Tonometer | AT 900 Goldmann | AT 900 Goldmann | AT 900 Goldmann | AT 900 Goldmann |
| Condition / Warranty | Used / 90 days | Used / 90 days | Used / 90 days | Used / 90 days |
| Price | $14,300 | $8,800 | $9,900 | $6,600 |
Looking for a higher magnification range with a tilting microscope? See the Haag Streit BQ 900 with AT 900. Want the same BM 900 platform without the LED upgrade and at a lower price point? Compare with the non-LED BM 900 + AT 900 listing.
Questions about the BM 900 LED? Contact us for availability, freight quote, and configuration questions — call 305-771-4562 or use the contact form.
