Using light to capture cross-sectional images of tissue structure on the micron scale, in situ and in real-time requires advanced technology. Technology (that we call optical-coherence technology), that since the turn of the century has been both expensive and exclusive. It is however been a hot minute since OCT tech was first introduced, and that has since allowed instruments like the Stratus 3000 to age (fairly well in-fact). Of course things that age also depreciate, and that’s allowed the Stratus 3000 to enter a price point that doesn’t require a major practice overhaul or a 60-month financing option. It has however allowed the time necessary to advance OCT technology into smaller and more advanced instruments, and thus we can’t help but see the age of the Stratus; a bulky table, a basic dingy monitor, and a boat-like patient apparatus. Should you care how your OCT looks though? Maybe. The Stratus wouldn’t make our top five list of “handsome topographers, but it would make our list of top affordable ones– perhaps even lead that list. What we sacrifice in age we gain through a fantastic price point, that has now allowed the budgeted clinic access to tomography otherwise not attainable.
OUR TAKE: A very affordable way into OCT technology with a large footprint and aging graphics/reports.
Stratus OCT provides a higher level of diagnostic insight – a significant contribution to therapeutic confidence across a broad spectrum of ophthalmic diseases. Using near-infrared frequency light, Stratus OCT reveals an in vivo cross- sectional view with an axial resolution of 10 μm, and quantitative analysis of the retinal layers.
In the Stratus OCT image display, retinal layers with the highest reflectivity appear red. In a healthy retina, these include the nerve fiber layer, retinal pigment epithelium and choriocapillaris. The layers that exhibit minimal reflectivity appear blue or black, such as the photoreceptor layer, choroid, vitreous fluid or blood
Stratus OCT reveals the retinal layers in high-resolution, cross-sectional views, offering insight for diagnosis, therapy and ongoing management of retinal disorders
- Stratus OCT reveals and measures diffuse macular thick- ening and loss of foveal contour
- Intraretinal cysts and fluid accumulation are identifiable as areas of low reflectivity in the cross-sectional scan
- Post-treatment resolution of retinal thickening can be quantified and monitored
- Epiretinal Membrane
- Stratus OCT scan shows the epiretinal membrane as a highly reflective band on the inner retinal surface
- Separation of the membrane from the retina is visible in areas
- Underlying retina is thickened, with loss of normal foveal contour
- Age-related Macular Degeneration
- Disruption of RPE, caused by neovascularization and drusen, can be visualized
- Pockets of interretinal fluid are visible as areas of reduced reflectivity
- Structural changes resulting from therapy can be quanti- fied and monitored
Retinal Nerve Fiber Layer Analysis
- Analysis of RNFL aids in identification of early glaucoma- tous loss
- Circular scans of 3.4 mm diameter around optic nerve head provide measurement of RNFL in the peripapillary region
- RNFL thickness measurement is graphed in a TSNIT orient- ation and compared to age-matched normative data
- Optic Nerve Head Analysis
- Radial line scans through optic disc provide cross- sectional information on cupping and neuroretinal rim area
- Disc margins are objectively identified using signal from end of RPE
- Key parameters include cup-to-disc ratio and horizontal integrated rim volume1
- Macular Thickness Analysis
- Thinning of the macula may reflect glaucomatous loss
- Structural analysis of retinal sublayers reveals macular complications
- Cross-sectional view provides visualization and measurement of retinal layers
Retinal Thickness Report
Optic Nerve Head Analysis Report
RNFL Thickness Average Analysis
RNFL Thickness Serial Analysis
Stoplight Color Scheme
The Zeiss Stratus’ external software runs on a Windows 2000 OS environment and cannot be upgraded or migrated to a different operating system at this time.
BuzzOptics includes Stratus OCT software with revision 4.0 or better. You may purchase later software revisions directly from the manufacture for additional cost (subject to availability). BuzzOptics does not recognize Stratus software revisions greater than 4.0 to provide significant usability or diagnostic advancements/improvements.
The Stratus does not perform non-contact Pachymetry.