Corneal Topography is a diagnostic and research tool that provides an essentials complement to wave front aberrometry. This book explains about the ability to adapt corneal refractive procedures to minimize total postoperative aberrations and topography and aberrometry data. This book contains a wealth of knowledge about cataract and refractive surgery to provide a thorough review of corneal topography and its applications. The techniques of topography were developed on the foundations of keratometry and keratoscopy and the image enhancement and color-coded maps led to rapid adoption of corneal topography among refractive surgeons. This book provides in an easily understandle format that corneal topography quickly enables to understand corneal degeneration such as keratoconus and pellucid marginal. Section I, Introduction to Corneal Topography, 1. Fundamentals on Corneal Topography, 2. Special Topographic Conditions, 3. Topographic Machines, 4. Orbscan , 5. The Orbscan IIz Diagnostic System and Zywave Analysis , 6. Orbscan Corneal Mapping in Refractive Surgery, 7. Nidek OPD Scan in Clinical Practice, 8. Anterior Keratoconus, 9. Corneal Topographers and Wavefront Aberrometrers: Complementary Tools, Section II, LASIK, LASEK and PRK, 10. The Excimer Laser Beam Profile Topography and Classification, 11. Posterior Corneal Changes in Refractive Surgery, 12. Topography and Aberrometer-guided Laser, 13. Aberropia: A New Refractive Entity, 14. Irregular Astigmatism: LASIK as a Correcting Tool, 15. Corneal Ectasia Post-LASIK: The Orbscan Advantage, 16. Presbyopic Lasik, 17. Aberrometry and Topography in the Vector Analysis of Refractive Laser Surgery, 18. NAV Wave: Nidek Technique for Customized Ablation, Section III, Other Refractive Procedures, 19. Conductive Keratoplasty for Changing Corneal Curvature, 20. Intacs: Refractive Correction with an Intracorneal Device, Section IV Cataract, 21. Corneal Topography in Cataract Surgery, 22. Corneal Topography in Phakonit with a 5 mm Optic Rollable IOL.