Corneal Topography Principles and Applications /: Principles and Applications. (2019)

• Record Type: Book
• Further Information: Note: Melanie Corbett, Nicholas Maycock, Emanuel Rosen, David O'Bart.
• Other Names: Corbett, Melanie; Maycock, Nicholas; Rosen, Emanuel (Manu), 1953-; O'Brart, David
• Contents: Intro; Contents; Part I: Basic Principles; 1: Assessment of Corneal Shape; History of Corneal Topography; Description of Corneal Shape; Corneal Height or Elevation; Surface Slope; Radius of Curvature; Global (Axial/Sagittal) Radius of Curvature; Local (Instantaneous/Tangential) Radius of Curvature; Corneal Power; Methods of Measurement; Reflection-Based Methods; Projection-Based Methods; Applications of Corneal Topography; The Normal Cornea and Corneal Disease; Contact Lens Fitting; Corneal and Refractive Surgery; Suitability of Topography Systems; Situation; Cornea; Measurements Presentation and UseReferences; *References Particularly Worth Reading; 2: Videokeratoscopes; Optics of Convex Mirrors; Reflection from the Cornea; Keratometry; Photokeratoscopy; Computer-Assisted Videokeratoscopy; Hardware; Cone of Mires; Alignment and Focusing; Image Capture; Software; Digitisation; Image Analysis; Reconstruction Algorithms; Accuracy; Checks and Editing; Display of Results; References; *References Particularly Worth Reading; 3: Projection-Based Systems; The Principle of Projection; Advantages of Projection-Based Systems; Measurement of Corneal Height Irregular and Non-reflective SurfacesEntire Corneal Coverage; High Resolution and Accuracy; Disadvantages of Projection-Based Systems; Influence of Tear Fluid; Lack of Standardised Presentation Formats; Slit Photography; Rasterstereography; Moiré Interference; Laser Interferometry; References; * References Particularly Worth Reading; 4: Scheimpflug Camera-Based Systems; Introduction; The Scheimpflug Principle; Scheimpflug-Based Systems; Single Scheimpflug Imaging; Dual Scheimpflug Imaging; Integration of Placido Topography; Advantages of Scheimpflug-Based Systems Disadvantages of Scheimpflug-Based SystemsOther Applications; Corvis® ST; References; 5: Presentation of Topographic Information; Measurements; Raw Image; Height; Slope and Curvature; Power; Displays; Two-Dimensional Maps; Colours; Scales; Absolute/Standardised Scale; Normalised/Relative Scale; Adjustable Scale; Overlays; Semitransparent Map; Pupil; Grids; Optical Zones; Axes; Orthogonal Axes; Zonal Axes; Instantaneous Axes; Three-Dimensional Representations; Three-Dimensional Wire Net; Cross Sections; Height Cross Sections; Refraction Profile; Isometric Map; Multiple Displays; Serial Maps Difference MapsTailored Displays; Numeric and Statistical Displays; Cursor Box; Numeric Map; Statistical Indices; Simulated Keratometry Readings; Sphero-Equivalent Power; Asphericity; Surface Asymmetry Index; Inferior-Superior Value; Keratoconus Prediction Index; Surface Regularity Index; Potential Visual Acuity; Optical Aberrations; Interpretation; Application of Basic Principles; Pattern Recognition; Neural Networks; References; *References Particularly Worth Reading; Part II: The Normal Cornea; 6: Normal Topography; Normal Corneal Shape; Corneal Anatomy and Optics; Anterior Corneal Surface
• Edition: 2nd ed
• Publisher Details: Cham : Springer
• Publication Date: 2019
• Extent: 1 online resource (288 p.)
• Subjects: 617.7/19; Corneal topography; Cornea -- Measurement; Cornea -- Surgery; Cornea -- Measurement; Cornea -- Surgery; Corneal topography; Electronic books; Electronic books
• Languages: English
• ISBNs: 9783030106966; 3030106969
• Access Rights: Legal Deposit; Only available on premises controlled by the deposit library and to one user at any one time; The Legal Deposit Libraries (Non-Print Works) Regulations (UK).
• Access Usage: Restricted: Printing from this resource is governed by The Legal Deposit Libraries (Non-Print Works) Regulations (UK) and UK copyright law currently in force.