Description
What’s Included
- Keeler 40H slit lamp
- Keeler D-KAT digital applanation tonometer
- Power cable
- 90-day Digital Eye Center warranty
Condition & Warranty
Used. This unit has been tested and is in excellent working order, ready to use on arrival with no additional setup steps; it has been cleaned and shows some cosmetic signs of prior use, visible in the product photos. Covered by a 90-day warranty on parts and workmanship.
Keeler 40H Slit Lamp — Used Tower Slit Lamp with D-KAT Digital Tonometer
The Keeler 40H slit lamp is a tower-illumination biomicroscope built around Galilean converging binocular optics and a rotating five-step magnification drum that runs from 6× to 40×. Clinicians can move from a low-power overview of the lids and adnexa to high-magnification detail of the cornea, anterior chamber, and lens without changing instruments. This Keeler 40H slit lamp comes paired with the Keeler D-KAT digital applanation tonometer, so Goldmann-method intraocular pressure readings happen at the same station.
The D-KAT keeps the familiar Goldmann applanation technique but shows the result on a digital display instead of a fine mechanical drum scale, which removes the need to interpolate between dial lines. It runs on a single AA battery.
A comparative analysis of intraocular pressure measurement across different tonometry methods and examiner experience levels, indexed by the National Library of Medicine, supports Goldmann-type applanation as the clinical reference for IOP assessment.
Why Practices Choose the Keeler 40H & D-KAT
- Five-step magnification — 6×, 10×, 16×, 25×, and 40× on a rotating drum, more range than the three-step changers common at this price level
- Tower illumination — the slit projection sits above the microscope, a classic design for direct, retro, and oblique illumination techniques
- Continuously variable slit — slit width adjusts from 0 to 12 mm for fine beam control
- Brightness at your fingertip — the rheostat sits next to the joystick, so intensity changes without taking your hand off the controls
- Digital tonometry — the D-KAT displays Goldmann-method IOP on a clear digital readout
- Complete exam station — slit lamp and tonometer arrive together, ready for one exam lane
Clinical Applications
- Anterior-segment examination of the lids, conjunctiva, cornea, iris, and lens
- Intraocular pressure measurement with Goldmann-method applanation tonometry
- Glaucoma screening and follow-up visits
- High-magnification assessment of corneal and endothelial detail
- Contact lens fitting and follow-up evaluation
Who This Is For
- Optometry and ophthalmology practices opening or adding an exam lane
- Clinics that want digital applanation tonometry on the slit lamp
- Buyers looking for a five-step Keeler tower slit lamp at a used-equipment price
Technical Specifications
| Specification | Detail |
| Manufacturer | Keeler |
| Model | 40H |
| Microscope | Galilean converging binocular |
| Magnification | 5-step rotating drum: 6×, 10×, 16×, 25×, 40× |
| Illumination design | Tower slit projection |
| Slit width | Continuously variable, 0 to 12 mm |
| Brightness control | Rheostat next to the joystick |
| Tonometer | Keeler D-KAT digital applanation (Goldmann method) |
| Tonometer power | 1 × AA battery |
| Tonometer measurement deviation | 0.49 mN or 1.5% of reading, whichever is greater |
| Condition | Used |
| Warranty | 90 days, parts and workmanship |
Compare Slit Lamp Options
| Feature | Keeler 40H | Topcon SL-2G | Lombart/Keeler SL-B3 | Topcon SL-D2 |
| Optics | Galilean converging | Galilean converging | Galilean | Galilean converging |
| Magnification | 5-step: 6×–40× | 3-step: 10×/16×/25× | 3-step: 10×/16×/25× | 3-step: 10×/16×/25.6× |
| Tonometer | Keeler D-KAT digital | Optilasa Goldmann-type | Optilasa R-900 Goldmann-type | Haag-Streit 870 Goldmann-type |
| Condition | Used | Used | New – Open Box | Used |
| Price | $4,576 | $4,576 | $4,576 | $4,490 |
Need more magnification range with a mechanical tonometer? See the five-step Marco G5 Ultra with Haag-Streit 900 tonometer, or the tower-style Lombart/Keeler SL-B3.
Questions about the Keeler 40H slit lamp? Contact us for availability and shipping details.
