Description
This exact unit sold recently — but we specialize in sourcing refurbished ophthalmic equipment. Typical turnaround is 2–4 weeks once we confirm availability with our partners. Request a free quote with no deposit required.
Request Availability → Free quote · No obligation · 90-day warranty when shipped
What’s Included
- Marco SL-B2 LED slit lamp — main unit with integrated joystick base
- Marco AT-8 Applanation Tonometer
- Power cable and LED illumination system
- 90-day Digital Eye Center warranty
Condition & Warranty
Condition: Used (Certified Pre-Owned). This unit has been inspected and tested by an authorized ophthalmic technician. Cosmetic and functional condition verified excellent.
Warranty: 90 days from purchase date. Covers all optical and mechanical functions. Routine maintenance (cleaning, calibration) excluded.
Marco SL-B2 Slit Lamp — Used LED Biomicroscope with Marco AT-8 Tonometer
The Marco SL-B2 slit lamp is an optically superior anterior segment biomicroscope built for demanding clinical and optometric environments. Featuring Galilean parallel optics, three magnification steps (10×, 16×, 25×), and low-voltage integrated LED illumination, this system delivers consistent, artifact-free imaging for routine exams, corneal pathology workups, and complex diagnostic tasks.
This unit ships complete with the Marco AT-8 Applanation Tonometer — one of the most widely used Goldmann-style applanation systems in clinical practice — making it a complete anterior segment workstation at a used-equipment price point.
A 2025 study in Scientific Reports (PMID 41162513) demonstrated that digital slit lamp–derived parameters provide clinically valid measurements for shallow anterior chamber screening — affirming the diagnostic precision that instruments like the Marco SL-B2 bring to glaucoma risk evaluation and anterior segment assessment.
Marco SL-B2 Slit Lamp — Features & Optical Design
- Galilean Parallel Binocular Optics — 8° binocular converging angle delivers wider field of view and reduced parallax error versus standard compound designs; 13° objective convergence angle ensures precise working distance
- Three Magnification Steps — 10× (22 mm FOV), 16× (14 mm FOV), and 25× (8.5 mm FOV) via 12.5× eyepieces with −8 to +8 D diopter adjustment; covers wide-field screening through high-magnification fine detail
- LED Illumination System — Low-voltage integrated LED provides long operational lifespan with no bulb replacements, minimal heat generation, and consistent color temperature for accurate tissue evaluation
- Six-Filter Complement — Clear, Red-Free (green), Neutral Density, Blue (cobalt), Yellow, and pop-up diffuser support fluorescein staining, nerve fiber evaluation, and diffuse illumination techniques
- Precision Slit Beam — Continuously variable width (0–14 mm), 14 mm slit length, 360° rotation with 0° and 180° detents; seven apertures (0.2 mm to 14 mm) for all standard optical section techniques
- Stable Patient Platform — Chinrest with 70 mm elevation adjustment, 107 mm X-axis, 110 mm Y-axis, and 25 mm Z-axis base travel; compact 405×500 mm footprint fits standard exam lanes
- Red LED Fixation Target — Flexible cable-mounted fixation lamp minimizes accommodation artifact and stabilizes eye position during critical examination phases
- Marco AT-8 Tonometer Included — Goldmann applanation principle; mounts to the slit lamp arm for seamless IOP measurement without repositioning the patient
Clinical Applications
The Marco SL-B2 supports diagnosis and management across the full spectrum of anterior segment disease:
- Corneal pathology — Herpetic keratitis, geographic ulcers, stromal scarring, corneal edema, and dystrophies
- Anterior uveitis — Keratic precipitates, iris nodules, posterior synechiae, and hypopyon grading
- Cataract evaluation — Nuclear, cortical, and posterior subcapsular morphology staging
- Glaucoma workup — Anterior chamber depth, angle anatomy visualization, IOP measurement via included AT-8 tonometer
- Conjunctival and scleral disease — Pterygium, pingueculum, episcleral inflammation, and limbal assessment
- Contact lens complications — Giant papillary conjunctivitis, lens deposits, and corneal neovascularization
- Dry eye and meibomian gland dysfunction — Corneal staining patterns, meibomian gland orifice evaluation, tear meniscus height
- Post-operative monitoring — Wound integrity, anterior chamber depth, corneal edema, and epithelial healing assessment
Who This Is For
- Ophthalmologists seeking a certified-used biomicroscope with integrated tonometry for high-volume clinics or second exam lanes
- Optometrists upgrading from entry-level equipment; Marco SL-B2 optics support complex anterior segment cases in general and specialty practice
- Residency and fellowship programs — proven clinical performance at a used-equipment budget; ideal for high-throughput training environments
- Mobile and telemedicine clinics — compact footprint, standard 110V AC operation, straightforward setup and transport
- Specialty practices (corneal, dry eye, glaucoma, cataract) where optical precision supports advanced diagnostic workflows and imaging integration
Technical Specifications
| Specification | Detail |
| Optical System | Galilean parallel binocular, 8° converging angle |
| Magnification | 10×, 16×, 25× (12.5× eyepieces) |
| Field of View | 22 mm (10×), 14 mm (16×), 8.5 mm (25×) |
| Eyepiece Diopter Range | −8 to +8 D |
| Pupillary Distance | 49–77 mm |
| Objective Focal Distance | 107 mm |
| Objective Convergence Angle | 13° |
| Slit Width | 0–14 mm continuously variable |
| Slit Length | 14 mm |
| Slit Rotation | 360° with 0° and 180° detents |
| Apertures | 7: 0.2 mm, 1 mm square, 2 mm, 3 mm, 5 mm, 9 mm, 14 mm |
| Filters | Clear, Red-Free, Neutral Density, Blue, Yellow, Pop-Up Diffuser |
| Illumination | LED, low-voltage integrated |
| Fixation Lamp | Red LED on flexible shrouded cable |
| Base Travel (X) | 107 mm |
| Base Travel (Y) | 110 mm |
| Base Travel (Z) | 25 mm |
| Horizontal Fine Adjustment | 12 mm |
| Chinrest Elevation | 70 mm adjustment range |
| Table Footprint | 405×500 mm |
| Included Tonometer | Marco AT-8 Applanation Tonometer |
| Condition | Used (Certified Pre-Owned) |
| Warranty | 90 days from purchase |
Compare Marco SL-B2 Slit Lamp — Similar Models Available
| Model | Optical System | Illumination | Tonometer | Condition | Price |
| Marco SL-B2 (this unit) | Galilean parallel, 3-step mag | LED | AT-8 included | Used | $4,400 |
| Marco SL-B3 | Galilean parallel, 3-step mag | LED | Optilasa included | Used | $4,725 |
| Marco G5 Ultra | Galilean parallel, zoom | LED | Tonometer included | Used | $5,300 |
| Haag-Streit BM 900 | Galilean parallel, zoom | LED | AT 900 + rolling table | Used | $8,580 |
Also explore the Marco SL-B3 LED Slit Lamp — the next step up in the Marco B-series, available with Optilasa tonometer at $4,725.
Ready to add this instrument to your practice? Contact Digital Eye Center for availability, shipping details, and warranty information. The Marco SL-B2 slit lamp is available now — reach out to confirm your order and arrange delivery.
Similar Slit Lamps In Stock Now
Need a comparable slit lamp available today? These units are in stock and ready to ship with a 90-day Digital Eye Center warranty.
Prefer to wait for the Marco SL-B2 LED Slit Lamp w/Tonometer- Used? Request availability and we’ll source one for you.
