There’s a lot to love about a stand-alone topographer unit; it’s fits on the pretest table (next to everything else) without a giant monitor and doesn’t require an IT genius to use and understand. Unlike most other computerized topographer, the ATLAS series by Zeiss has always possessed an all-in-one computer and topographer– rather than the inverse of a topographer cone-head and a computer on a giant table sold as a set. Even if it’s still running Windows 7 (or embarrassingly XP for that matter), it an attractive concept having all your pretest instruments sit on one table side-by-side. And so for that reason alone, the 9000 gets our nod of approval and applause. But let’s say you don’t care that it’s compact, and you want the latest-greatest topography option around- should you look towards the ATLAS 9000? As per the usual, it depends. The 9000 has improved some from prior Zeiss models, and as far as topography is concerned, it’ll do that and more– but with a new price tag of $18,000-something, it does make you scratch your head some. Yes, its invisible placido ring illumination is better for patient comfort and yes SmartCapture picks the best of 15 images, and yes MasterFit2 is better than MasterFit1, and yes it has some new software bells and whistles, and yes it overall runs better and more accurately- but is that enough? Zeiss is now nudging elbows with new players in the corneal market that can analyze tear film break-up time and perform limbus-to-limbus coverage with wildly impressive 3D presentation and tell you what the patient had for breakfast. However the ATLAS 9000 makes sense to us, and it is indeed a topographer for modern times.
OUR TAKE: A standalone topographer that does just about everything; just-about being the key word.
#1. Easier Than Ever
No other well-equipped topographer is easier to use (that’s our judgment) than the ATLAS 9000. The patient-rest assembly forces the perfect alignment and a working distance of 70mm combined with invisible-light placido rings offer unprecedented comfort for both patient and operator. For topography being a non-contact operation, most topographers feel intrusive–in your face and intimidating– however the 9000 does not. It also helps that in nearly every case only one image-capture was required (per eye). This is largely in part to Zeiss’ SmartCapture operating software which captures 15 images per second and then discriminates to find the best view with the most data points. It also has something called Cone-of-Focus Alignment which is a Zeiss synonym for “it aligns well and does what it’s advertised to do.”
#2. Axial Maps To Love
The 9000 will serve with the traditional axial map coverage you’re used to– enough to fit just about any contact lens with some knowledge. Optional modules do include Zeiss’ Masterfit II for contact lenses, and Pathfinder II software programs for refractive surgery evaluations– both of which help take the art out of topography analysis and both of which aren’t completely necessary. The 9000’s axial curvature data is sufficient; cursor-hover allows K readings anywhere on the captured corneal image and its color scale is quite easy to read. As far as graphics are concerned, the ATLAS has always lagged (mainly with resolution and pixellation) when compared to leading corneal refractive analyzers from the makes of Oculus or Medmont, however it’s still sufficient and the color scale provides ample contrast. When comparing curvature deviations of less than 1.0 diopters, the Atlas struggles to display this through an axial map report or corneal wavefront analysis.
As with prior ATLAS models, software modules allow ample presentation options, including OD/OS comparison, trend with exam time, differential display, and custom display options. See a complete list of presentation and exam views below in the specification columns.
#3. Corneal Wavefront Abberations
Incredible advances in corneal analysis technology has allowed instrumentation to give stunning clarity and detail in pre/post refractive surgery analysis’. The new ATLAS 9000 is Zeiss’ first true Wavefront Abberometer (combined topographer) which can provide competing software presentations to the likes of the Oculus Keratograph, Medmont E300, etc… Corneal Wavefront Analysis takes corneal topography to a new dimension– using ray tracing technology, the Atlas displays higher-order corneal aberrations providing valuable insight for patient education and treatment planning:
- Educate patients about higher-order aberrations and simulate visual acuity
- Assess corneal refraction with image simulation and point spread function
- Measure corneal spherical aberration with Zernike analysis to optimize the selection of aspheric IOLs
- View the effects of individual higher order corneal aberrations
- View changes in contrast sensitivity through the modulation transfer function (MTF)
#4. Automatic Pupilometry + HVID
- Pupil size, measured at two levels of illumination (scotopic and photopic @700 nm), provides insight into optical zone under varying light conditions.
- View centration of LASIK or orthokeratology treatment in relation to pupil center to assess treatment effectiveness
- Improve multifocal contact lenses selection by understanding patient’s pupil size at two levels of illumination
- Streamline contact lens selection and fitting with automatic Horizontal Visible Iris Diameter (HVID) measurement
Yep–Zeiss’ DICOM gateway will connect to nearly every EHR, however check with your IT company prior.
No. An instrument table for this unit is sold separately.
We would recommend a day of training for all staff members using this unit. as mentioned above, alignment is hardly difficult, however there may be a small learning curve associated with getting familiar with its software.
The ATLAS 9000 has 22 rings.