Description
What’s Included
- Zeiss IOLMaster Version 5.5 optical biometer
- Medical-grade electric elevation table
- Power supply and connection cables
- 90-day Digital Eye Center warranty
Condition & Warranty
Used. This Zeiss IOLMaster Version 5.5 workstation has been fully tested and is in excellent working order, with the interferometry engine capturing rapid, repeatable axial length scans and the telecentric keratometry aligning precisely across the measurement range. The medical-grade electric table travels smoothly through its full vertical range. The unit shows minor cosmetic wear consistent with used diagnostic equipment. Covered by a 90-day warranty on parts and workmanship.
Zeiss IOLMaster 5.5 — Used Optical Biometer with Electric Table
The Zeiss IOLMaster 5.5 is the long-standing gold standard in non-contact optical biometry, engineered to deliver high-precision measurements for intraocular lens (IOL) power calculations. Using partial coherence interferometry (PCI), the Zeiss IOLMaster 5.5 captures axial length, corneal curvature (keratometry), anterior chamber depth, and white-to-white corneal diameter without ever touching the cornea.
Version 5.5 software adds optimized signal processing for fast measurement acquisition together with a full library of lens formulas, including Hoffer Q, Holladay 1 and 2, SRK/T, and the Haigis-L formula for calculating lens powers in post-refractive eyes (post-LASIK, PRK, or LASEK) without prior clinical data. Supplied with an electric elevation table for ergonomic patient positioning, this used workstation delivers reliable, reproducible readings that protect surgical outcomes.
The National Library of Medicine reports strong agreement between partial coherence interferometry and newer optical methods in predicted IOL power, supporting optical biometry as a dependable baseline for cataract and refractive planning.
Why Practices Choose the Zeiss IOLMaster 5.5
- Gold-standard optical biometry — a globally recognized baseline for accurate, non-contact IOL calculations and predictable surgical outcomes.
- Distance-independent telecentric keratometry — telecentric optics keep corneal curvature readings accurate even with minor patient eye shifts.
- Haigis-L post-refractive mode — built-in formulas calculate lens powers for post-LASIK, PRK, and LASEK eyes.
- Ultrasound connectivity — transfers data to external immersion A-scan units for very dense, optically unmeasurable cataracts.
- Included electric elevation table — a medical-grade automated table speeds alignment and maintains stability during testing.
- Non-contact patient safety — eliminates corneal abrasion risk, topical anesthesia, and cross-contamination concerns of contact probes.
- Zeiss workflow integration — communicates with Zeiss FORUM networks to support surgical planning.
See the ZEISS IOLMaster in Action
This ZEISS demonstration shows the IOLMaster’s distance-independent telecentric keratometry — the same measurement technology built into this Version 5.5 workstation.
Clinical Applications
- Pre-operative cataract evaluations establishing axial length, white-to-white, and corneal curvature data for standard and premium IOL selection.
- Post-refractive lens power calculations using Haigis-L to reduce refractive surprises in eyes with prior laser vision correction.
- Toric IOL planning using independent keratometric values to map corneal astigmatism axes before surgery.
- Axial length tracking as a rapid, non-contact reference useful in myopia progression protocols.
Who This Is For
- Cataract and refractive surgeons requiring precise, repeatable biometry to meet demanding post-operative expectations.
- High-volume eyecare clinics needing an efficient standalone pre-op biometry station.
- Private practices and satellite locations adding a flagship Zeiss biometer to a secondary lane without brand-new cost.
Technical Specifications
| Specification | Detail |
| Model | Zeiss IOLMaster (Version 5.5 software) |
| Type | Non-contact optical biometer (partial coherence interferometry) |
| Measurement parameters | Axial length, keratometry, anterior chamber depth, white-to-white |
| Axial length range | 14 to 38 mm |
| Corneal radii range | 5 to 10 mm |
| Anterior chamber depth range | 1.5 to 6.5 mm |
| White-to-white range | 8 to 16 mm |
| Keratometry | Distance-independent telecentric keratometry |
| Integrated formulas | Haigis, Haigis-L, Hoffer Q, Holladay 1, Holladay 2, SRK II, SRK/T |
| Table | Integrated medical-grade electric elevation table |
| Condition | Used |
| Warranty | 90-day warranty on parts and workmanship |
Compare Zeiss IOLMaster Options
| Feature | Zeiss IOLMaster 5.5 | Zeiss IOLMaster 5.4 | Zeiss IOLMaster 500 |
| Software version | 5.5 | 5.4 | 500 |
| Biometry technology | Optical PCI | Optical PCI | Optical PCI |
| Keratometry | Telecentric | Telecentric | Telecentric |
| Condition | Used | Used | Used |
| Price | $7,480 | $4,290 | $10,450 |
Also consider the Zeiss IOLMaster 5.4 for a lower-cost entry into optical biometry, or step up to the Zeiss IOLMaster 500 for the updated platform.
Questions about the Zeiss IOLMaster 5.5? Contact us for availability and shipping details.
