By Ming Wang MD
In this moment variation, Dr. Ming Wang, Dr. Tracy Swartz and over 50 participants mix the $64000 themes of refractive and top class lens surgical procedures and placed corneal topography within the context of wavefront know-how. With over 500 photographs, this variation provides precise consciousness to the most recent advances in those technologies.
The cutting-edge technology and alertness of corneal topography for those anterior phase surgical procedures is easily represented in Corneal Topography, A advisor for scientific software within the Wavefront period, moment variation, making it the most recent and such a lot complete reference of those state of the art applied sciences for refractive and for top class IOL surgery.
Topographic and Wavefront applied sciences lined Include:
• Placido disc-based topographic systems
• Elevation-based topographic systems
• Ultrasound-based topographic systems
• OCT-based topographic systems
• Topography and wavefront mixed systems
Topographic functions coated Include:
• Topographies of corneal ailments, together with post-RK/CK/LASIK/PRK
• Topography-guided touch lens fitting
• Topography program in refractive surgical procedure and in top rate IOL surgeries
• Topographic assistance for corneal surgeries
• Topography-guided customized treatments
• mixed therapy thoughts utilizing topography and wavefront data
• destiny improvement of corneal topography within the wavefront era
Updated and reorganized to mirror adjustments within the know-how, Corneal Topography: A advisor for medical program within the Wavefront period, moment version is indispensible for all anterior phase surgeons, ophthalmologists, and optometrists.
Read Online or Download Corneal Topography: A Guide for Clinical Application in Wavefront Era PDF
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Additional info for Corneal Topography: A Guide for Clinical Application in Wavefront Era
21-32) © 2012 SLACK Incorporated 22 Chapter 3 A B Figure 3-1. 5 D. 0 D. Note the detail changes as the step size changes. TABLE 3-1. 9 This standard was anticipated to encompass the presentation of information, the standardized scale, scale interval, and the representative color palette used for curvature and elevation maps. It would allow users of corneal topographers to directly compare the topography maps produced by different manufacturers. 5 In an effort to overcome this potential point of confusion, an alternative color scale was proposed—the Universal Standard Scale (USS).
50 D, which is depicted by a color from the middle of the spectrum. Approximately 66% of the population has a central corneal power within one standard deviation of the mean (42 to 45 D), and this is represented by the adjacent colors on the scale. Less than 3% of the population has a central corneal power beyond ±3 SD, represented by red and dark blue. 7 AUTOSIZE/NORMALIZED SCALE The normalized scale (relative, adaptive) or autoscale automatically adjusts and subdivides a specific cornea into several dioptric intervals based on the actual dioptric range of the cornea measured.
30 Chapter 3 Figure 3-13. When topography maps appear nonsensical, dry eye may be the etiology, as in this case. With treatment, the topography should become more regular. Figure 3-14. Data loss resulting from INTACS segments. Topographic Map Interpretation When looking at a topography map, you need to consider the clinical picture and interpret the map in that perspective. Correct identification of the type of map is crucial—is it a curvature map or elevation map? When comparing maps over time, it is necessary to examine the scale.