Description
What’s Included
- Haag-Streit Lenstar LS-900 Gen 2 optical biometer main unit
- T-Cone corneal topography attachment
- Electric ophthalmic table
- EyeSuite IOL calculation software
- Chinrest and headrest assembly
- All standard cables and power supply
- 90-day Digital Eye Center warranty on parts and workmanship
Condition & Warranty
Used. This Haag-Streit Lenstar LS-900 Gen 2 has been inspected and function-tested across all 8 biometric measurement modes, T-Cone corneal topography, and EyeSuite IOL calculation workflows. OLCR axial length reproducibility and dual-zone keratometry confirmed operational. Electric table height function verified. Covered by a 90-day warranty on parts and workmanship through Digital Eye Center.
Lenstar LS-900 — Used Haag-Streit 8-in-1 Optical Biometer with T-Cone Topography & Electric Table
The Lenstar LS-900 is Haag-Streit’s OLCR-based optical biometer — measuring all eight critical pre-surgical parameters (axial length, dual-zone keratometry, anterior chamber depth, central corneal thickness, lens thickness, white-to-white, and pupillometry scotopic and photopic) in a single 3-second non-contact acquisition without patient repositioning. This used Lenstar LS-900 Gen 2 includes the T-Cone corneal topography attachment and electric ophthalmic table, delivering a complete IOL planning workstation with corneal topography capability that practices would otherwise require two separate instruments to replicate.
The Lenstar LS-900 uses Optical Low Coherence Reflectometry (OLCR) at 820 nm — a coherence-based measurement principle that delivers reproducibility comparable to immersion ultrasound biometry without the contact, coupling medium, or operator dependence that make immersion techniques time-consuming in busy surgical practices. Research published in International Ophthalmology (National Library of Medicine, 2015) confirmed that the Lenstar LS-900 delivers refractive outcomes equivalent to immersion ultrasound biometry — validating OLCR-based non-contact biometry as the reproducible standard for IOL power calculation in routine cataract surgery practice.
Why Practices Choose the Lenstar LS-900
- 8 measurements in one 3-second acquisition — Axial length, dual-zone K (flat and steep), ACD, CCT, LT, WTW, and scotopic/photopic pupillometry are all captured simultaneously without patient repositioning — reducing per-eye measurement time compared to instruments that require sequential measurements or manual repositioning between parameters.
- Dual-zone keratometry — Two concentric keratometry zones (2.3 mm and 1.65 mm) measure central and paracentral corneal curvature simultaneously, providing the multi-zone K data that Barrett Universal II, Haigis, and other modern formulas use to improve accuracy in post-refractive surgery eyes and steep/flat corneas.
- T-Cone corneal topography — The included T-Cone Placido attachment adds full corneal topography to the biometry workflow — enabling detection of irregular astigmatism, keratoconus, and post-surgical ectasia risk in the same examination step as IOL planning.
- EyeSuite IOL — comprehensive formula library — EyeSuite integrates Haigis, SRK/T, Hoffer Q, Holladay 1, Barrett Universal II, and other modern formulas with online formula access, enabling formula selection optimized for each eye’s biometric profile rather than defaulting to a single formula for all cases.
- OLCR precision at 820 nm — Optical Low Coherence Reflectometry provides axial length measurements with reproducibility of ≤0.02 mm, equivalent to immersion ultrasound without requiring contact, coupling medium, or technician skill in probe placement — eliminating the primary source of operator-dependent variability in traditional biometry.
- Electric table for ergonomic efficiency — Motorized height adjustment enables rapid patient positioning across a full day of surgical pre-op biometry without manual table adjustment, reducing staff fatigue and per-patient setup time in high-volume cataract surgery practices.
- Connectivity and data export — EyeSuite data exports directly to surgical planning platforms and EMR systems via DICOM or direct export — eliminating manual transcription errors in IOL power and axis selection during pre-surgical planning.
Clinical Applications
- Cataract surgery IOL power calculation — The Lenstar LS-900 provides all biometric inputs required by modern IOL formulas (AL, K, ACD, CCT, LT, WTW) in a single acquisition, enabling accurate IOL power selection for monofocal, toric, EDOF, and multifocal IOL implantation.
- Toric IOL axis planning — Dual-zone keratometry and T-Cone topography together provide the anterior corneal astigmatism magnitude and axis data needed for toric IOL alignment marking — with the topography identifying irregular astigmatism cases where toric IOL implantation may underperform.
- Premium IOL candidacy screening — The complete biometric profile plus corneal topography identifies candidates with irregular corneas, dry eye surface changes (reduced K reliability), or high HOAs who would not achieve the visual quality expectations that premium IOL patients demand.
- Post-refractive surgery IOL planning — Dual-zone K and corneal topography together characterize the post-ablation corneal profile needed by dedicated post-LASIK IOL formulas (Barrett True-K, Haigis-L, ASCRS online) that require multi-zone corneal curvature data.
- Phakic IOL sizing — Accurate ACD and WTW measurements from the Lenstar LS-900 provide the vault prediction inputs required for Visian ICL sizing, enabling phakic IOL planning without a separate measurement instrument.
- Axial length surveillance — Serial AL measurements with OLCR reproducibility of ≤0.02 mm track myopia progression in pediatric patients and document post-surgical axial length stability in adults — applications where measurement reproducibility determines clinical utility.
Who This Is For
- High-volume cataract surgery practices — the Lenstar LS-900’s single-acquisition workflow and electric table eliminate the per-patient setup overhead in a full day of pre-surgical biometry measurements, supporting the throughput required in practices performing 500+ cases per year.
- Premium IOL programs — practices offering EDOF, multifocal, or toric IOL implantation need the dual-zone keratometry and corneal topography that the Lenstar LS-900 with T-Cone provides, without maintaining two separate instruments for biometry and topography.
- Practices replacing immersion ultrasound biometry — OLCR non-contact biometry eliminates the operator skill, coupling medium, and patient contact requirements of immersion techniques while delivering equivalent refractive outcomes — converting a high-skill measurement into a technician-operable workflow.
- Surgical centers and ASCs supporting multiple surgeons — the EyeSuite formula library and data export capability enable each surgeon to use their preferred IOL formula from the same biometry dataset without requiring separate measurements on surgeon-specific instruments.
- Practices entering refractive cataract surgery — the used Lenstar LS-900 provides the complete biometric measurement platform — OLCR biometry, dual-zone K, topography, and EyeSuite IOL calculation — required to launch a premium cataract surgery program at a fraction of the cost of a new instrument.
Technical Specifications
| Specification | Detail |
| Technology | OLCR — Optical Low Coherence Reflectometry |
| Wavelength | 820 nm |
| Generation | Gen 2 |
| Measurements | AL, dual-zone K, ACD, CCT, LT, WTW, pupillometry (scotopic + photopic) |
| Acquisition Time | ~3 seconds (full 8-parameter measurement) |
| AL Reproducibility | ≤0.02 mm |
| Keratometry Zones | Dual-zone: 2.3 mm and 1.65 mm |
| Topography | T-Cone Placido attachment (included) |
| IOL Software | EyeSuite (Haigis, SRK/T, Hoffer Q, Holladay 1, Barrett Universal II + more) |
| Table | Electric ophthalmic table (included) |
| Manufacturer | Haag-Streit AG, Switzerland |
| Condition | Used |
| Warranty | 90 days |
Compare Optical Biometer Options
| Feature | Lenstar LS-900 | Zeiss IOLMaster 500 | Zeiss IOLMaster 5.4 |
| Technology | OLCR 820 nm | PCI (Partial Coherence Interferometry) | PCI (Partial Coherence Interferometry) |
| Keratometry | Dual-zone (2.3 mm + 1.65 mm) | Single-zone | Single-zone |
| Corneal Topography | Yes — T-Cone included | No | No |
| Electric Table | Included | Varies | Varies |
| Condition | Used | Refurbished | Refurbished |
| Price | $11,000 | $12,825 | $7,125 |
Questions about the Lenstar LS-900? Contact us for availability and shipping details.
