By Josef F. Bille, Ulrich von Pape (auth.), Professor Dr. Josef F. Bille, Carol F. H. Harner PhD, Dr. Frieder F. Loesel (eds.)
Refractive surgeons and clinicians are seeking for a extra custom-made method of refractive surgical procedure. This accomplished record on sight correction via laser surgical procedure presents the practitioner with sturdy heritage info from best researchers. rigorously illustrated, it info the most recent recommendations and medical leads to wavefront expertise for laser surgical procedure, that's now defining a brand new average of perform. This moment version has been considerably accelerated to incorporate in-depth descriptions of significant new advances in addition to glimpses of what the longer term holds. The booklet might be essential to all wishing to increase their wisdom of personalized refractive surgical procedure with an knowing of the underpinning technology.
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Additional info for Aberration-Free Refractive Surgery: New Frontiers in Vision
The wave aberration an d point-spread funct ion of two eyes with and witho ut adaptive correction are shown in Fig. 8b and Fig. 8c. 9a shows the Modulation Transfer Function (MTF) of the eye with and without adaptive correction. Even though th e tested eyes were not made aberration free with adaptive opt ics, t he MTF with the adaptive correction for a 6 mm pupil was significantly higher than for the same eyes having the same 6 mm pupi l with the best sphere-cylindrical correction. MTF was also higher than the highest MTF under nat ural viewing conditions wit h a 3 mm pupil.
15 t he result of a 192 V OV [ill -153 V D -t84V F ig. 14. P. Bille and U. 191JlTl (6 mm po . ) Fig. 15. Gauss-S eidel algorithm comp ensat ion of defocus based on the Gauss-Seidel algorit hm is gra phically demonstrated. The membr ane mirror consists of a silicon nitride membrane coated with aluminum. It is deformed by elect rostatic forces of 37 und erlying elect rodes, arranged in a hexagonal grid  . Since the real time compensation with a closed loop requires compensation of accommodation, anot her approach was chosen.
M. R Williams, "Wavefront guided ablation," Am. J . Ophthalmol. 132, 915-919, 2001 29. C. He, S. H. Webb, "Measurement of the wavefront aberration of the eye by a fast psychophysical procedure," J. Opt. Soc. Am. A15 , 2449-2456, 1998 30. P. Mierdel, M. Kaemmerer, M. E. Krinke, T. Seiler, "An automated aberrometer for clinical use," Proc. SPIE, 2000 31. V. G . P. H . V. M . Sokurenko, "Ret inal ray tracing technique for eye-refraction mapping," Proc. of SPIE, 2971 , 175-183, 1997 32. M. MacRae, M.