Iol Power

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  • Edition: 1st
  • Format: Hardcover
  • Copyright: 3/15/2011
  • Publisher: Slack Incorporated
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Supplemental Materials

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IOL Powerby Kenneth J. Hoffer, MD will be the definitive resource for ophthalmologists who strive to increase the accuracy for multifocal IOLs and overcome the challenges that can come with treating patients that have had laser refractive surgery, such as PRK, LASIK, and LASEK. Inside the pages ofIOL Power, Dr. Hoffer is joined by some of the most respected physicians and physicists in the field of IOL power, together their expertise, spanning over 35 years, makes even the most difficult subjects easy to understand. Some topics include: Ultrasound velocities for axial length measurement IOLMaster in difficult eyes Manual keratometry and instrumentation Regression and theoretic formulas Formula personalization Multifocals and toric IOLs Aspheric IOLs Topography & Scheimpflug corneal powers Chapters Cover: All aspects of obtaining the most accurate biometry Available modern calculation formulas Latest instruments Problems that can arise, how to prevent, and then repair IOL Powerby Kenneth J. Hoffer, MD is structured in a logical manner so as to cover every facet of IOL power from the basics to the most complicated subjects to achieve the most accurate and precise calculations and should be in the hands of all ophthalmic surgeons, technicians, residents and students.

Author Biography

IOL Power by Kenneth J. Hoffer, MD is structured in a logical manner so as to cover every facet of IOL power from the basics to the most complicated subjects to achieve the most accurate and precise calculations and should be in the hands of all ophthalmic surgeons, technicians residents, and students.

Table of Contents

Dedicationp. v
Acknowledgmentsp. xi
About the Authorp. xii
Contributing Authorsp. xv
Forewordp. xix
Forewordp. xxi
Basics and Accurate Biometryp. 1
Section I: Introductionp. 3
Axial Length: Ultrasound: Backgroundp. 9
Immersion Versus Applanation Ultrasoundp. 13
Ultrasound Velocities for Axial Length Measurementp. 17
A-Scan Biometry: Immersion Techniquep. 25
A-Scan Biometry: Avoiding Pitfalls With Immersion Techniquep. 29
Available A-Scan Instrumentationp. 39
Immersion Using the Prager Shellp. 53
Axial Length: Laser Interferometry: Basics of the IOLMasterp. 63
IOLMaster Examinationp. 67
IOLMaster in Difficult Eyesp. 71
Axial Length: Laser Interferometry: The LENSTAR LS900 Instrumentp. 75
Corneal Power: Diopters Versus Radiusp. 89
Corneal Power: Manual Keratometry and Instrumentationp. 93
Automated Keratometry for IOL Power Calculationp. 97
Corneal Power: Corneal Topography for IOL Power Calculationp. 107
Corneal Power: Measuring Corneal Power With the Pentacamp. 115
IOL Position: ACD and ELPp. 119
IOL Position: Measuring the ACD by Optical Pachymetryp. 123
IOL Position: Double-AL Method for Scleral Buckle Eyesp. 131
Formulas and Special Circumstancesp. 133
Introductionp. 135
Formulas and Programs: Formula History and Basicsp. 137
Formulas and Programs: Regression and Theoretic Formulasp. 143
Formulas and Programs: Olsen Formulap. 149
Formulas and Programs: Accessing Modern IOL Power Formulasp. 155
Formulas and Programs: Formula Personalizationp. 163
Special Circumstances: AL Measurement in Staphyloma Eyesp. 167
Special Circumstances: Silicone Oil-Filled Eyesp. 169
Special Circumstances: Unilateral High Myopes and Hyperopesp. 171
Special Circumstances: Penetrating Keratoplasty and Scarred Corneasp. 173
Special Circumstances: Radial Keratotomy Eyesp. 175
Special Circumstances: Post-Laser Refractive Surgery Eyesp. 179
Special Circumstances: Haigis-L IOL Formulap. 195
Special Circumstances: Double-K Methodp. 199
Special Circumstances: Influence of Spherical Aberration on IOL Powerp. 207
Special Circumstances: Multifocals and Toric IOLsp. 211
Special Circumstances: Pediatric Eyesp. 215
Special Circumstances: Piggyback IOLsp. 219
Special Circumstances: Silicone Oil Powerp. 221
Special Circumstances: Effect of IOL Tilt on Astigmatismp. 223
Special Circumstances: Aniseikonia and Anisometropiap. 233
Preventing IOL Power Errorsp. 237
Diagnosing and Treating IOL Power Errorsp. 237
Future Directions in IOL Power Calculation: Intraoperative Refractive Biometryp. 241
IOL Power Clubp. 247
Financial Disclosuresp. 249
Indexp. 251
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