Read e-book online Aberration-Free Refractive Surgery: New Frontiers in Vision PDF

By Josef F. Bille, Ulrich von Pape (auth.), Professor Dr. Josef F. Bille, Carol F. H. Harner PhD, Dr. Frieder F. Loesel (eds.)

ISBN-10: 3642181619

ISBN-13: 9783642181610

ISBN-10: 3642621112

ISBN-13: 9783642621116

Refractive surgeons and clinicians are seeking for a extra personalized method of refractive surgical procedure. This finished record on sight correction via laser surgical procedure presents the practitioner with sturdy heritage info from best researchers. rigorously illustrated, it information the most recent ideas and medical leads to wavefront expertise for laser surgical procedure, that is now defining a brand new regular of perform. This moment variation has been considerably elevated to incorporate in-depth descriptions of significant new advances in addition to glimpses of what the longer term holds. The e-book may be critical to all wishing to increase their wisdom of custom-made refractive surgical procedure with an realizing of the underpinning technology.

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Extra info for Aberration-Free Refractive Surgery: New Frontiers in Vision

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4 Comparison of Foil Mirrors and Microchip Mirror Recently, an active matrix mirror was developed exhibiting an array of 200 x 240 mirrors (40 Jlm x 40 Jlm each). e. approximate ly one wavelengt h. By using th e 27f phase wrapping method t he range of t he wavefront deformation to be corrected can be greatly enha nced. In a simulat ion, t he foil mirror and t he multi-micromirror system were compared for a comp ensation of ast igmatism of 1 diopter (D) (Fig. 17). On t he left hand side of Fig. 17 t he simulate d vision chart blurred by an ast igmat ism of 1 D is shown.

The use of subjective ray tracing opt ometers to measure the wave aberration in the eye was explored by Tscherning in 1894 [19] followed by Smirnov (1962) [20], Howland & Howland (1977) [21], and Webb, Penney & Thompson (1992) [22]. Subjective ray tracing is time consuming and depends heavily on the subjects' responses . The only objective optometer available in the late 1980s was the Howland aberroscope as modified by Walsh, Charman, & Howland (1984) [23]. The poor image quality of retinal photographs at the time hindered automatic data analysis.

G. N. C . Howland, "Object ive technique for the determination of monochromatic aberration of the human eye," J . Opt. Soc. Am . ~1 , 987-992, 1984 24. J . Liang , "A new method to precisely measure the wave aberration in the eye using a Hartmann-Shack sensor," PhD Dissertation, University of Heidelbery, Germany, 1991 2 Wavefront Technology for Vision and Ophthalmology 45 25. J . Liang , B. Grimm, S. F . " J . Opt. Soc. Am . All, 1949-1957, 1994 26. J . R Williams, and D. Miller, "Supernormal vision and high resolution imaging through adaptive optics" .

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Aberration-Free Refractive Surgery: New Frontiers in Vision by Josef F. Bille, Ulrich von Pape (auth.), Professor Dr. Josef F. Bille, Carol F. H. Harner PhD, Dr. Frieder F. Loesel (eds.)

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