Cataract and refractive surgery. Progress III by Thomas Kohnen, Douglas D. Koch

By Thomas Kohnen, Douglas D. Koch

The necessities in Ophthalmology sequence represents readership attractiveness of the 1st sequence, every one of an exact updating booklet at the growth in all 8 volumes. this can be a good fortune that was once made p- subspecialties of ophthalmology. sible predominantly through the various opinion-leading In a quarterly rhythm, 8 concerns are released authors and the exceptional part editors, in addition to overlaying clinically appropriate achievements within the entire with the confident help of the writer. There box of ophthalmology. This well timed move of strengthen- are many sturdy purposes to proceed and nonetheless enhance ments for the absolute best care of our eye sufferers has the dissemination of this didactic and clinically r- confirmed to be powerful. The preliminary operating speculation of evant info. offering new wisdom instantly following p- lication within the peer-reviewed magazine and never ready G.K. Krieglstein for the textbook seems to be hugely achievable. R.N. Weinreb we're now getting into the 3rd cycle of the necessities sequence Editors in Ophthalmology sequence, having been inspired by means of September 2008 Preface we're happy to proportion with our readers this 3rd uncorrected and, in a single example, corrected imaginative and prescient. variation of Cataract and Refractive surgical procedure, below themes in corneal refractive surgical procedure comprise disc- 3 years from book of the second one version. sion of the administration of upper order aberrations The dramatic velocity of switch in cataract and refractive and corneal tactics for treating presbyopia.

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Naeser K, Knudsen EB, Hansen MK (2002) Bivariate polar value analysis of surgically induced astigmatism. J Refract Surg 18:72–8 37. Jiang Y, Le Q, Yang J, Lu Y (2006) Changes in corneal astigmatism and high order aberrations after clear corneal tunnel phacoemulsification guided by corneal topography. J Refract Surg 22:1083–8 38. Holladay JT (2003) Optical quality and refractive surgery. Int Ophthalmol Clin 43:119–36 39. Simsek S, Yasar T, Demirok A, Cinal A, Yilmaz OF (1998) Effect of superior and temporal clear corneal incisions on astigmatism after sutureless phacoemulsification.

For large zonular defects with intact residual zonules, a condition which may apply to Marfan’s syndrome, a standard ring is preferably implanted after thorough a Fig. 4 (a) Left: Koloboma CTR shielding a large surgical koloboma. Right: Two multi-segmented CTRs implanted to remedy congenital aniridia. (b) Artificial silicone iris covering large iris defect (Courtesy P. 2 Applications and Designs 33 b Fig. 4 (continued) cortico-capsular hydro- and viscodissection. Then, a Cionni CTR is added with the hook positioned at the center of the zonular defect to be finally suture-fixated in the sulcus.

R. Koch using a special measuring CTR with radial indicators which allow for direct read-off of distance (Courtesy by M. 1 mm after 3 months, with no shrinkage observed thereafter. 5 CTRs and After-Cataract Formation CTRs have been attributed to reduce regeneratory aftercataract formation. Theoretically, this might be effected by two mechanisms. (1) The LEC migration-inhibiting effect of the optic rim is based on the formation of a capsular bend at the posterior optic edge. Capsular bending is impeded by ovalization of the capsular bag and the longitudinal stress folds created by the IOL haptics as particularly evident in pediatric eyes [6].

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