Description
What’s Included
- Carl Zeiss SL 120 slit lamp (microscope, illumination unit, chinrest and joystick base)
- Carl Zeiss AT 020 applanation tonometer with mounting
- Power supply and connection cables
- 90-day Digital Eye Center warranty
Condition & Warranty
Used. This Zeiss SL 120 slit lamp and AT 020 tonometer have been inspected and tested for clear optics, smooth magnification changes, full joystick travel and proper tonometer function; the housing shows light cosmetic wear consistent with clinical use. Covered by a 90-day warranty on parts and workmanship.
Zeiss SL 120 Slit Lamp — Used Galilean Slit Lamp with AT 020 Tonometer
The Zeiss SL 120 slit lamp is an all-around examination instrument built on a parallel Galilean stereo microscope with a 5-step magnification changer. With standard 10× eyepieces it covers 5× to 32×, and with optional 12.5× eyepieces 6× to 40× — wide fields for screening the lids and cornea, high power for the endothelium, lens and anterior vitreous. This used Zeiss SL 120 slit lamp comes paired with the matching Zeiss AT 020 applanation tonometer.
The AT 020 is the Goldmann-type tonometer Zeiss designed for the SL 115 Classic, SL 120 and SL 130, so IOP can be measured at the same station without moving the patient. Illumination comes from a 6 V / 20 W halogen lamp with a continuously adjustable slit from 0 to 14 mm wide, plus blue and red-free filters for fluorescein and nerve fiber work. For a practice that wants Zeiss optics on a proven, serviceable platform, the Zeiss SL 120 slit lamp is a strong value.
The National Library of Medicine describes Goldmann applanation tonometry — the principle the AT 020 uses — as the clinical reference standard for measuring intraocular pressure in glaucoma care.
Why Practices Choose the Zeiss SL 120
- Zeiss Galilean optics — parallel stereo beam path gives a bright, sharp, comfortable binocular view at every magnification step.
- 5-step magnification changer — five fixed powers (5×–32× with 10× eyepieces, 6×–40× with 12.5× eyepieces) move from overview to fine detail with one turn.
- Matching AT 020 tonometer — Zeiss’s own Goldmann-type applanation tonometer for the SL 120, so pressure checks happen at the slit lamp.
- Flexible slit control — continuous 0–14 mm slit width plus stepped and continuous slit lengths for optical sections, beam measurements and diffuse viewing.
- Clinical filter set — swing-in blue and red-free filters and a diffusing screen, with an integrated heat-reflecting filter for patient comfort.
- Single-hand joystick base — smooth X-Y-Z positioning with fine focusing from the joystick.
- Serviceable halogen platform — standard 6 V / 20 W halogen bulb that is easy to source and replace.
Clinical Applications
- Routine anterior segment exams of lids, conjunctiva, cornea, iris and lens
- Goldmann-type applanation tonometry for glaucoma screening and follow-up
- Fluorescein evaluation of the tear film, corneal staining and contact lens fit
- Cataract grading and post-operative checks
- Fundus and optic nerve viewing with handheld 78D/90D lenses
Who This Is For
- Optometry and ophthalmology practices adding or replacing an exam lane
- Clinics that want Zeiss optics with a matching Zeiss tonometer at a used-equipment price
- Satellite offices, teaching settings and mission clinics needing a dependable full-size slit lamp
Technical Specifications
| Spec | Detail |
| Model | Carl Zeiss SL 120 with Zeiss AT 020 applanation tonometer |
| Optical system | Galilean, parallel stereoscopic microscope |
| Magnification | 5 steps: 5×, 8×, 12×, 20×, 32× with 10× eyepieces (6×, 10×, 16×, 25×, 40× with 12.5× eyepieces) |
| Illumination | 6 V / 20 W halogen lamp |
| Slit width | Continuous, 0 to 14 mm |
| Slit length | Steps 0.5 / 3.5 / 8 / 14 mm; continuous 1 to 6 mm |
| Filters | Blue, green (red-free) and diffusing screen, swing-in; integrated heat-reflecting filter |
| Tonometer | Zeiss AT 020, Goldmann-type applanation (two-prism image splitting) |
| Tonometer measuring range | 0 to 78.4 mN (drum reading × 10 = IOP in mmHg, approx. 0 to 80 mmHg) |
| Applanation field diameter | 3.06 mm |
| Condition | Used |
| Warranty | 90-day warranty on parts and workmanship |
Compare Zeiss Slit Lamp Options
| Feature | Zeiss SL 120 w/ AT 020 | Zeiss SL 130 | Zeiss SL-115 Classic w/ Haag-Streit 870 |
| Magnification | 5-step: 5×–32× (10× eyepieces) | 5-step: 5×–32× (10× eyepieces) | 3-step: 8×, 12×, 20× (10× eyepieces) |
| Slit width | 0–14 mm | 0–14 mm | 0–14 mm |
| Tonometer | Zeiss AT 020 | Not included | Haag-Streit AT 870 |
| Condition | Used | Used | Used |
| Price | $4,180 | $2,750 | $3,850 |
Also consider the Zeiss SL 130 if you already own a tonometer, or the Zeiss SL-115 Classic for a compact 3-step Zeiss with a Haag-Streit tonometer.
Questions about the Zeiss SL 120? Contact us for availability and shipping details.
