Nidek Marco Corneal Analyzer OPD Scan III
Technical Details Nidek Marco Corneal Analyzer OPD Scan III
| Power Mapping | |
|---|---|
| Spherical Power Range | -20.00 to +22.00 D |
| Cylindrical Power | 0.00 to ±12.00 D |
| Axis | 0 to 180° |
| Measurement Area | 2.0 to 9.5 mm (7 zone measurement) |
| Data Points | 2,520 points (7 x 360) |
| Measuring time | < 1.0 seconds |
| Measurement Method | Automated objective refraction (dynamic skiascopy) |
| Mapping Methods | OPD, Internal OPD, Wavefront maps, Zernike graph, PSF, MTF graph, Visual Acuity Corneal Topography |
| Measurement Rings | 33 vertical, 39 horizontal |
| Measurement Area | 0.5 to 11.0 mm (r = 7.9) |
| Dioptric Range | 33.75 to 67.5 D |
| Axis Range | 0 to 359˚ |
| Data Points | More than 11,880 |
| Mapping Methods | Axial, Instantaneous, “Refractive”, Elevation, Wavefront maps, Zernike graph, PSF, MTF graph, Visual Acuity General Information |
| Working Distance | 75 mm |
| Auto Tracking | X-Y-Z directions |
| Observation Area | 14 x 11 mm |
Accurate Diagnostics
Over 20 diagnostic measurements are acquired in 10 seconds. Easy alignment and automatic capture of data ensures accurate readings. Wavefront data is gathered from available zones up to a 9.5mm area, adding the capability to provide for calculation of mesopic refractions. Blue light, 33 ring, placido disc topography is gathered in one second.
Data View Options
Axial, gradient, instantaneous, numeric K display, numeric power display, PSF (point spread function), zernike graph (including corneal), contact lens summary, VA-ETDRS simulations, internal OPD, eye image, comparison maps, and difference maps.
Unique Features
Cataract and refractive surgeries have now been taken to another dimension. Detailed patient summaries are available in just a matter of seconds. Pre-op toric axis alignment can be mapped to iris or other physical landmark positons. Retro illumination images can be used post-op to verify IOL axis alignment.
Dysfunctional Lens Syndrome (DLS)
The above map is a measurement of a prior myopic LASIK patient with Dysfunctional Lens Syndrome (DLS). The Point Spread Function (PSF) maps show that the cornea is contributing to the problem but the majority of the patient’s issue is lenticular change. The patient thought she needed another LASIK treatment, when in actuality, the lens changed. A refractive lens exchange is recommended.
Dysfunctional Lens Syndrome (DLS)
The above map is a measurement of a prior myopic LASIK patient with Dysfunctional Lens Syndrome (DLS). The Point Spread Function (PSF) maps show that the cornea is contributing to the problem but the majority of the patient’s issue is lenticular change. The patient thought she needed another LASIK treatment, when in actuality, the lens changed. A refractive lens exchange is recommended.
Day/Night Wavefront Refractions
Pupillometry measurements are utilized to allow for the calculation of separate wavefront refractions at 4mm and 6mm pupil sizes (or mesopic if smaller than 6mm). This provides information on the stability of the refractive error as pupil size changes, and the individual starting points for separate day and night refractions, if indicated. Your patients can receive a state-of-the-art printout of their ‘before’ and ‘after correction’ chart or understand why they are not able to achieve 20/20. Welcome to the next generation of refractive eye care.
The Marco Corneal Analyzer OPD Scan III is an automated 5 in 1 instrument that combines topography, wavefront, auto refraction, keratometry, and pupillometry — allowing accurate and reliable analysis of corneal aberration.
OPD Scan III combines three advanced technologies – plus wavefront analysis – in one easy-to-use refractive diagnostic workstation. Now, with a single device, you can obtain refraction, corneal topography, optical path difference (OPD) and wavefront analysis.
Nidek Marco Corneal Analyzer OPD Scan III allows you to evaluate your patient comprehensively, perform refractive and cataract surgery screenings, evaluate postoperative complaints, and determine pathology diagnoses. In short, the system gives you vision diagnostic capabilities that in the past were simply unavailable.
With the remarkable OPD Scan III, Marco gives you an instrument that can evaluate the patient’s total visual system. Measuring both low- and high-order aberrations on a single axis, the Nidek Marco Corneal Analyzer OPD Scan III gives you the power to diagnose the patients’ complete optical pathway (day or night vision), and maximize patient outcomes.
Features :
* Five-in-One true refractive workstation for all practitioners
* Overview summary for optimal clinical decisions
* A number of summaries
* Wider measurement area
* Greater topography resolution, blue placido rings
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