Description
What’s Included
- ZEISS IOLMaster 500 Optical Biometer
- Keyboard with touchpad
- Accessories case (forehead rest + calibration test target)
- User manual
- Power cable
- 90-day Digital Eye Center warranty
Condition & Warranty
Used. This unit has been tested and is in excellent working order — it powers on, the IOLMaster software loads correctly, and all operational components function as intended. It has been cleaned and is ready for use upon receipt; some cosmetic wear consistent with normal clinical use may be visible. Covered by a 90-day warranty on parts and workmanship.
Zeiss IOLMaster 500 — Used Optical Biometer
The Zeiss IOLMaster 500 is the long-standing gold standard in optical biometry, with more than 100 million IOL power calculations performed worldwide on ZEISS IOLMaster devices. It measures four key biometric parameters — axial length, corneal radii, anterior chamber depth, and white-to-white — and is the only optical biometer to use distance-independent telecentric keratometry, which delivers robust, repeatable K readings with excellent agreement to manual keratometry.
An automated Dual Mode captures axial length and keratometry without manual interaction, letting you measure both eyes in under 60 seconds. Integrated plausibility checks and a traffic-light indicator reduce common measurement errors even in challenging eyes — dense cataracts (more than 93% penetration rate), staphyloma, pseudophakic, and silicone-filled eyes. A built-in keyboard, joystick, and integrated printer support a complete chairside workflow, with ZEISS FORUM, CALLISTO eye, ultrasound, and EMR/PMS connectivity over Ethernet and USB.
The National Library of Medicine documents that the ZEISS IOLMaster-500 delivers intraocular lens power prediction accuracy on par with other modern optical biometers in cataract surgical planning.
Why Practices Choose the Zeiss IOLMaster 500
- Distance-independent telecentric keratometry — exclusive to the ZEISS IOLMaster — robust, repeatable corneal power readings that agree closely with manual keratometry
- Automated Dual Mode — axial length and keratometry captured together at the push of a button, both eyes in under 60 seconds
- High cataract penetration — more than 93% measurement success, up to 20% higher than other optical biometers in dense cataracts
- Comprehensive IOL formula suite — SRK II, SRK/T, Holladay 1 & 2, Hoffer Q, Haigis, plus Haigis-L for post-LASIK, PRK, and LASEK eyes
- Built-in printer and keyboard — immediate printed output and a complete chairside workflow with no external PC required
- Broad connectivity — ZEISS FORUM, CALLISTO eye, ultrasound data link, and EMR/PMS export over Ethernet and USB
- Trusted ZEISS platform — the reference standard behind over 100 million IOL calculations worldwide
Clinical Applications
- Pre-operative cataract IOL power calculation
- IOL power calculation in post-refractive-surgery eyes (Haigis-L)
- Toric IOL planning using keratometry and anterior chamber depth
- Reliable biometry in dense and challenging cataracts
- Routine axial length and anterior chamber depth documentation
Who This Is For
- Cataract and refractive surgery practices
- Ambulatory surgery centers and hospital eye units
- Ophthalmology clinics adding or upgrading optical biometry
- Practices seeking a cost-effective, trusted ZEISS biometer
Technical Specifications
| Specification | Detail |
| Model | IOLMaster 500 |
| Brand | ZEISS (Carl Zeiss Meditec) |
| Type | Optical Biometer |
| Measurement Technology | Partial Coherence Interferometry (PCI) |
| Keratometry | Distance-independent telecentric keratometry |
| Axial Length Range | 14 – 38 mm |
| Corneal Radii Range | 5 – 10 mm |
| Anterior Chamber Depth Range | 1.5 – 6.5 mm |
| White-to-White Range | 8 – 16 mm |
| Axial Length / Radii / ACD Resolution | 0.01 mm |
| White-to-White Resolution | 0.1 mm |
| IOL Calculation Formulas | SRK II, SRK/T, Holladay 1 & 2, Hoffer Q, Haigis, Haigis-L |
| Cataract Penetration Rate | >93% |
| Laser Class | Class 1 |
| Connectivity | ZEISS FORUM, CALLISTO eye, ultrasound link, EMR/PMS (Ethernet/USB) |
| Line Voltage | 100 – 240 V ±10% (self-sensing), 50–60 Hz |
| Power Consumption | Max. 75 VA |
| Condition | Used |
| Warranty | 90-day Digital Eye Center warranty |
Compare ZEISS IOLMaster Options
| Feature | IOLMaster 500 | IOL Master 5.5 | IOL Master 5.4 |
| Measurement | PCI + telecentric K | PCI + 6-pt telecentric K | PCI + 6-pt telecentric K |
| Axial length range | 14–38 mm | 14–40 mm | 14–40 mm |
| Cataract penetration | >93% | High | High |
| Built-in printer | Yes | Yes | Yes |
| Condition | Used | Used | Used |
| Warranty | 90-day | 90-day | 90-day |
| Price | $10,450 | $7,480 | $4,290 |
Also consider the IOL Master 5.5 and IOL Master 5.4 for a different price tier in the same ZEISS IOLMaster family.
Questions about this biometer? Contact us for availability and shipping details.
