By Ming Wang MD

ISBN-10: 1556429703

ISBN-13: 9781556429705

With the fast development of corneal topography and wavefront applied sciences and the elevated software of corneal topography not just in refractive but additionally in top rate IOL surgical procedure, a brand new variation of the best-selling Corneal Topography: A advisor for medical program within the Wavefront period often is the optimal source for either ophthalmologists and optometrists.

In this moment version, Dr. Ming Wang, Dr. Tracy Swartz and over 50 participants mix the real issues of refractive and top class lens surgical procedures and positioned corneal topography within the context of wavefront expertise. With over 500 pictures, this variation offers particular consciousness to the newest advances in those technologies.

The cutting-edge technology and alertness of corneal topography for those anterior section surgical procedures is definitely represented in Corneal Topography, A consultant for medical program within the Wavefront period, moment version, making it the newest and so much complete reference of those state of the art applied sciences for refractive and for top rate IOL surgery.

Topographic and Wavefront applied sciences coated Include:
• Placido disc-based topographic systems
• Elevation-based topographic systems
• Ultrasound-based topographic systems
• OCT-based topographic systems
• Topography and wavefront mixed systems

Topographic purposes lined Include:
• Topographies of corneal illnesses, 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 recommendations 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 consultant for scientific program within the Wavefront period, moment version is indispensible for all anterior phase surgeons, ophthalmologists, and optometrists.

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Additional resources for Corneal Topography: A Guide for Clinical Application in Wavefront Era

Example text

0-D intervals, particularly at the low end of the scale. 5-D step intervals. 5-D interval is so wide that irregularities in corneal topography may be masked. An example of changes in topographic patterns associated with increased step size is shown in Figure 3-1. Figure 3-1A shows more detailed irregularity compared to its counterpart (Figure 3-1B) due to smaller step size. 5,6 21 Wang M. Corneal Topography: A Guide for Clinical Application in the Wavefront Era, Second Edition (pp. 21-32) © 2012 SLACK Incorporated 22 Chapter 3 A B Figure 3-1.

2 An example is shown in Figure 4-1. They directly measure the curvature of the cornea and calculate the elevation map using a coordinate system from the curvature data. This requires assumptions about the corneal geometry, however. Elevation is generated by fitting slope data to a predefined mathematical model, which may be spheric, aspheric, or a conical section. 3 Studies regarding the accuracy of early Placido disk systems found acceptable levels of accuracy and reproducibility. 4 Systems tend to be more accurate centrally than peripherally, and defocus increases errors.

Its primary functions include filtering of solutes passing to and from epithelial cell layers and serving as a substrate for the induction of polarity and differentiation of the overlying epithelium. Endothelium The corneal endothelium is a single layer of hexagonal cells adherent to the posterior aspect of Descemet’s membrane. Their abundant organelles demonstrate the high level of metabolic and synthesizing activity of these cells. 16 A major function of the endothelium is the maintenance of corneal transparency through the regulation of stromal hydration.

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Corneal Topography: A Guide for Clinical Application in Wavefront Era by Ming Wang MD

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