Irregular Astigmatism: Diagnosis and TreatmentSLACK Incorporated, 2008 - 295 Seiten Since the advent of keratorefractive surgery and its rising popularity, irregular astigmatism has become an increasingly important issue for ophthalmologists and optometrists. Despite the success of LASIK and PRK, there are more and more patients experiencing visual quality problems due to the non-physiological modification of the corneal structure. Among these complications, irregular astigmatism is perhaps the most difficult to treat. The first of its kind, Irregular Astigmatism: Diagnosis and Treatment synthesizes our knowledge and understanding of irregular astigmatism and addresses state-of-the-art technology in management and treatment. Dr. Ming Wang, assisted by Dr. Tracy Swartz, has led a team of internationally known experts in the field to produce this innovative, comprehensive, and logically presented text, which includes more than 300 illustrations to supplement the information provided. Inside you will find: Every physician who performs keratorefractive surgery understands that in reducing a patient's refractive error, there is a possibility of creating irreversible effects on visual quality. Irregular Astigmatism: Diagnosis and Treatment is intended to help prevent and reduce the iatrogenic creation of irregular astigmatism, as well as provide effective treatment when postoperative complications do arise. Complications discussed include: In addition, this text systematically separates two distinctly different etiological groups of irregular astigmatism--that of a structurally stable cornea and that of a structurally unstable weak cornea--and comprehensively presents all treatment modalities for each. Treatment technologies addressed include: With the maturation of keratorefractive technology in recent years, effective treatment for iatrogenic irregular astigmatism is quickly developing. Irregular Astigmatism: Diagnosis and Treatment provides everything refractive surgeons, ophthalmologists, and optometrists need to know about this important topic. |
Inhalt
Introduction A Brief History Astigmatism | 3 |
Ocular Components of Regular and Irregular Astigmatism | 9 |
Corneal Biomechanics | 23 |
Evaluation of Irregular Astigmatism With Artemis VHF Digital Ultrasound Scanning | 29 |
Clinical Evaluation of Regular and Irregular Astigmatism | 43 |
Keratoconus and Pellucid Marginal Degeneration Etiology and Clinical Presentations of Irregular Astigmatism | 53 |
Nonectatic Corneal Problems Causing Irregular Astigmatism | 61 |
Etiology and Clinical Presentations of Irregular Astigmatism After Keratorefractive Surgery | 73 |
Phototherapeutic Keratectomy for Irregular Astigmatism With and Without Modulators | 167 |
Treating Stable Corneas Combined Consideration of Wavefront and TopographyGuided Treatment | 177 |
Irregular Astigmatism WaveLight Allegretto Wave TopographyGuided Customized Ablation Treatment | 185 |
Irregular Astigmatism LaserSight Ellipsoid Model and Topography Driven Aspheric Treatment | 195 |
Treatment of Irregular Astigmatism Developing an Ideal Corneal Surface With the iVIS Suite | 211 |
TopographyGuided Ablation With the Carl Zeiss Meditec MEL80 and CRS Master | 219 |
Irregular Astigmatism CustomContoured Ablation Pattern Treatment | 227 |
Correcting Irregular Astigmatism After LASIK | 233 |
Etiology and Clinical Presentation of Irregular Astigmatism in Other Surgical Settings | 85 |
Nonsurgical Treatment for Irregular Astigmatism Contact Lens Options | 101 |
Principles of Surgical Treatment for Irregular Astigmatism An Overview | 111 |
Indications for Penetrating Keratoplasty for Irregular Astigmatism | 117 |
INTACS Implantation | 129 |
Lamellar Keratoplasty | 137 |
Corneal CrossLinking With Riboflavin and Ultraviolet Irradiation in Unstable Corneas With Progressive Irregular Astigmatism | 145 |
Treating Stable Corneas WavefrontGuided Treatments for Irregular Astigmatism | 149 |
Photorefractive Keratectomy for the Correction of Corneal Irregular Astigmatism | 163 |
Management of Astigmatism During LensBased Surgery | 239 |
Conductive Keratoplasty Treatment for Astigmatism | 245 |
Principles of Surgical Treatment of Irregular Astigmatism in Unstable Corneas | 251 |
Asymmetrical Surgical Treatment Using Vector Planning | 263 |
Optimal Trea Normal Cornea TopographicallyGuided LASIK for Myopia Using the NIDEK Customized Aspheric Treatment Zone | 269 |
Future Direction Technological Development and Treating the Problem at Its Source | 279 |
285 | |