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Cassini Product Brochure
Cassini Product Brochure
This document discusses the importance of considering posterior corneal astigmatism in managing refractive outcomes, particularly when selecting toric intraocular lenses (IOLs) for astigmatism correction.
Key Findings
- Anterior corneal measurements alone can underestimate Total Corneal Astigmatism (TCA) by 0.22 D at 180° and exceed 0.50 D in 5% of eyes, potentially leading to overcorrection or undercorrection depending on the type of astigmatism.
- For every degree of misalignment, approximately 3% of the toric IOL cylinder power is lost.
Technology and Specifications
- The Cassini system uses multicolor LED imaging and 2nd Purkinje imaging technology to provide accurate TCA measurements.
- Specifications include a diopter range of 4.00D to 171.00D, auto capture with joystick positioning, and submicron accuracy due to color LED triangulation technology.
- Topographic maps and indices such as axial, refractive, tangential, and elevation are provided, along with keratoconus indices.
Benefits
- Cassini's accurate TCA measurement helps identify more patients eligible for astigmatism correction, increasing premium procedure volume.
- It aids in selecting the optimal toric IOL power and placing toric IOLs or arcuate incisions for optimal effect.
Conclusion
Cassini's pre-operative analysis provides reliable data for managing astigmatism, reducing unexpected refractive outcomes and enhancing surgical precision.
Catalog excerpts
“POST-OP SURPRISES”
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REFRACTIVE OUTCOMES When it comes to managing astigmatism, posterior curvature matters • Multi colored LED point-to-point ray tracing In Koch et al., anterior corneal measurements underestimated Total Corneal Astigmatism (TCA) by 0.22 D @ 180° and exceeded 0.50 D in 5% of eyes1 Selecting toric IOLs based on anterior corneal measurements alone could lead to overcorrection in eyes that have WTR astigmatism and undercorrection in eyes that have ATR astigmatism1 TOTAL CORNEAL ASTIGMATISM (TCA) 2nd Purkinje point-to-point ray tracing Combines the contributions of the anterior and posterior corneal...
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Cassini provides DATA YOU CAN TRUST For every degree of misalignment, about 3% of the toric IOL cylinder power is lost. Cassini provides the axis ±3°2 Don’t be caught off guard by the POSTERIOR CORNEAL ASTIGMATISM Cassini’s pre-op analysis takes the mystery out of managing astigmatism Identify more patients eligible for astigmatism correction and increase your premium procedure volume Select the optimal toric IOL power with confidence based on Cassini’s highly accurate TCA measurement Place toric IOLs or arcuate incisions for optimal effect with Cassini axis measu
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True Axis • Multicolor LED imaging combined with 2nd Purkinje imaging technology • Anterior Axis repeatability within 3 degrees2 True Magnitude • Diopter range 4.00D – 171.00D (Anterior) • Display K-values per zone 3/5/7/9mm (Anterior) • Keratometric indices display in D (diopters) or mm (millimeters) True Capture • Auto Capture with joystick positioning • Measurement Quality Factor parameter • Auto pupil detection • Topographic indices - E (shape factor), e (eccentricity), Q (asphericity), p (form factor) • Keratoconus indices - SAI (Surface Asymmetry Index), SRI (Surface Regularity Index) True...
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