Description
Zeiss IOLMaster 5.4 — Refurbished Optical Biometer for IOL Power Calculation
The Zeiss IOLMaster is the gold standard optical biometer for preoperative cataract surgery measurement — the instrument that established partial coherence interferometry as the preferred method for non-contact axial length measurement and IOL power calculation in ophthalmology. This refurbished Zeiss IOLMaster version 5.4 delivers the core optical biometry measurements that cataract surgeons depend on: axial length via partial coherence interferometry, corneal curvature (K-readings), anterior chamber depth, white-to-white diameter, and pupil size — all in a single non-contact measurement session. For practices performing cataract surgery that need a proven, reliable optical biometer at refurbished pricing, the IOLMaster 5.4 at $7,125 provides the essential measurement platform with a 6-month warranty.
Clinical evidence published by the National Library of Medicine establishes that accurate optical biometry — including precise axial length, keratometry, and anterior chamber depth measurement — is the critical determinant of postoperative refractive outcomes in cataract surgery, with optical biometry demonstrating superior accuracy over contact ultrasound A-scan for IOL power calculation in routine cataract cases.
What’s Included
- Zeiss IOLMaster biometer main unit (v5.4 software)
- Patient chin and forehead rest assembly
- Power cable and accessories
- 6-month Digital Eye Center warranty
Key Features of the Zeiss IOLMaster 5.4
- Partial coherence interferometry (PCI) axial length — non-contact optical axial length measurement to 0.01 mm precision; the measurement method that replaced contact ultrasound A-scan biometry as the standard for IOL power calculation in phakic eyes
- Integrated IOL power calculation formulas — SRK/T, Holladay, Haigis, Hoffer Q, and other standard IOL power calculation formulas built into the 5.4 software; target refraction input and formula comparison for optimal IOL selection at the slit in pre-operative planning
- Keratometry (K-readings) — corneal curvature in two meridians for astigmatism assessment and toric IOL planning; K-readings from the IOLMaster complement refraction data for premium IOL candidate evaluation
- Anterior chamber depth (ACD) — optical ACD measurement for IOL formulas that require it (Haigis, Olsen); more accurate IOL power calculation in eyes with unusual axial lengths or anterior segment proportions
- White-to-white and pupil size — horizontal corneal diameter and pupil measurement for phakic IOL sizing and documentation; complete biometry dataset for the pre-operative cataract record
- Refurbished 5.4 platform with 6-month warranty — proven Zeiss IOLMaster optical biometry at refurbished pricing; 6-month warranty on parts and workmanship
Clinical Applications
- Preoperative cataract surgery biometry — complete biometry dataset for IOL power selection; axial length, K-readings, ACD, and white-to-white in a single non-contact session; the standard pre-operative measurement workflow for cataract surgery planning
- Toric IOL planning — K-readings and axial length for toric IOL power and axis selection; astigmatism documentation for premium IOL surgical planning workflows
- Premium IOL candidate evaluation — biometry data to assess whether a patient is an appropriate candidate for multifocal or extended depth-of-focus IOLs; ACD and axial length measurements that inform premium IOL formula selection
- Postoperative refraction prediction — accurate pre-operative biometry reduces the incidence of unexpected postoperative refractive surprises; the IOLMaster 5.4 supports the predictable refractive outcomes that premium IOL patients expect
Who This Is For
- Cataract surgery practices adding optical biometry — the refurbished IOLMaster 5.4 at $7,125 provides optical biometry capability at refurbished pricing for practices transitioning from contact ultrasound A-scan or adding a second biometry station
- Practices replacing an older IOLMaster — the 5.4 software version provides complete IOL formula support for standard cataract surgery planning; an appropriate replacement for practices with a failed or aging biometer
- Practices offering premium IOL services — accurate optical biometry is a prerequisite for premium IOL implantation; the IOLMaster 5.4 provides the measurement precision that toric and multifocal IOL outcomes require
- ASC and hospital cataract programs — the refurbished IOLMaster 5.4 equips a dedicated pre-operative biometry station at ambulatory surgery centers or hospital cataract programs at below-market pricing
Technical Specifications
| Spec | Detail |
| Manufacturer | Carl Zeiss Meditec |
| Model | IOLMaster (version 5.4) |
| Measurement Technology | Partial coherence interferometry (PCI) |
| Axial Length Precision | 0.01 mm |
| Measurements | Axial length, keratometry, ACD, white-to-white, pupil size |
| IOL Formulas | SRK/T, Holladay, Haigis, Hoffer Q (v5.4 software) |
| Condition | Refurbished |
| Warranty | 6 months |
Condition & Warranty
Refurbished. This Zeiss IOLMaster has been inspected and verified for full optical biometry function including axial length, keratometry, ACD, and IOL calculation. Covered by a 6-month warranty on parts and workmanship.
Compare Zeiss Cataract Surgery Measurement Options
| Instrument | Primary Use | Condition | Price |
| Atlas 9000 (Win 10) | Corneal topography | Used | $8,300 |
| Atlas 9000 (Win XP) | Corneal topography | Refurbished | $8,075 |
| Zeiss IOLMaster 5.4 (this unit) | Optical biometry / IOL calc | Refurbished | $7,125 |
Questions about the Zeiss IOLMaster? Contact us — we can confirm software version, IOL formula library, and data export options.
