Section 1: Preliminary Considerations and Various IOL Power Calculation Formulas and Basics

1.Schematic Eye3

Athiya Agarwal, Amar Agarwal, Ashok Garg (India)

2.A-scan Biometry5

Sunita Agarwal, Amar Agarwal, Ashok Garg (India)

3.Corneal Topography10

Athiya Agarwal, Sunita Agarwal, Amar Agarwal, Nilesh Kanjani (India)

4.Optical Corneal Tomography21

Sandra Franco, Jose B Almeida (Portugal), Manuel Parafita (Spain)

5.Optical Biometry with IOL Master (Partial Coherence Interferometry)24

Ashok Garg (India)

6.Anterior Chamber Depth in IOL Power Estimation26

Aravind R Reddy (UK)

7.How to Calculate the Constant A28

Sonja Hairer, Tom Conze, Jerome Bovet (Switzerland)

8.Axial Length Dependence of IOL Constants31

Wolfgang Haigis (Germany)

9.IOL Calculations: When, How and Which?36

Kumar J Doctor, Nita Shanbhag, Sumita Karandikar, Pooja Deshmukkh (India)

10.How to Measure a Correct Central Keratometric Reading for IOL Power Calculation after LASIK Surgery?46

Lung-Kun Yeh, I-Jong Wang (Taiwan)

11.An Update on IOL Power Calculation Formulas51

JT Lin (Taiwan), Ashok Garg (India)

12.The New IOL Formulas based on Gaussian Optics62

JT Lin (Taiwan)

13.Classical vs Modern Formulas for Estimated Lens Position (ELP)70

JT Lin (Taiwan)

14.IOL Power Calculations75

Kenneth J Hoffer (Santa Monica, CA, USA)

15.The Theoretical Summary of IOL Formulas92

JT Lin (Taiwan)

16.Error Analysis of IOL Power Calculations101

JT Lin (Taiwan)

17.The Basics of Accommodating IOLs106

JT Lin (Taiwan)

18.IOL Calculation in Long and Short Eyes114

Wolfgang Haigis (Germany)

19.Customization of IOL Formulas121

B Vineeth Kumar (UK)

Section 2: IOL Power Calculations in Cataract Surgery

20.Intraocular Lens Power Selection for Children127

Rupal H Trivedi (USA), M Edward Wilson Jr (USA)

21.Age Dependent IOL Power Calculations for Pediatric Patients136

JT Lin (Taiwan)

22.History & Method of Intraocular Lens Power Calculation for Cataract Extraction Surgery after Corneal Refractive Surgery142

Alberto Artola Roig, Jorge L Alio Y Sanz (Spain)

23.Intraocular Lens Power Calculations in Phaco and Microphaco146

Ashok Garg (India), Arif Adenwala (UAE)

24.Intraocular Lens Power Calculations for High Myopia153

Renyuan Chu, Jinhui Dai (China)

25.Accuracy of Intraocular Lens Power Calculation in Bimanual Microphacoemulsification159

Gian Maria Cavallini, Luca Campi, Giovanni Neri (Italy)

26.Clinical Outcomes of Cataract Surgery after Previous Refractive Surgery164

Frank J Goes (Belgium)

Section 3: IOL Power Calculations in Refractive Surgery (Corneal and Lenticular Refractive Surgery)

27.IOL Power Calculations: A Topographic Method175

Frederic Hehn (France)

28.IOL Power Calculation in Post-hyperopic PresbyLASIK Cataract: Preliminary Results180

Roberto Pinelli (Italy)

29.Comparison of Methods for IOL Power Calculation after Incisional and Photoablative Refractive Surgery184

Antonio Calossi, Massimo Camellin (Italy)

30.IOL Power Calculations after Corneal Refractive Surgery205

Srinivas K Rao (India), Arthur Cheng, Dennis SC Lam (China)

31.The Latkany Regression Formula for Intraocular Lens Calculations after Myopic Refractive Surgery213

Evelyn Icasiano, Robert Latkany (USA)

32.The Latkany Regression Formula for Intraocular Lens Calculations after Hyperopic Refractive Surgery218

Evelyn Icasiano, Robert Latkany (USA)

33.Which IOL Formula to Use after Refractive Surgery221

Sonja Hairer, Tom Conze, Jerome Bovet (Switzerland)

34.Intraocular Lens Power Calculation after Advanced Surface Ablations (ASA)225

Tsiklis NS, Kymionis GD, Portaliou DM, Pallikaris IG (Greece)

35.The Mathematics of LASIK231

JT Lin (Taiwan)

36.Preoperative Evaluation of the Anterior Chamber for Phakic IOLs with the AC OCT238

Georges Baikoff (France)

37.Biometry for Refractive Lens Surgery244

Mark Packer, I Howard Fine, Richard S Hoffman (USA)

38.IOL Power Calculations in Phakic IOLs252

Dimitrii Dementiev, Kukrenkov Vetchiaslav (Italy)

38.Raytracing Analysis of Accommodating IOL254

Yoshiaki Nawa (Japan)

40.Analysis of Dual-optics Accommodating IOLs259

JT Lin (Taiwan)

41.Aspherical IOL Analysis265

JT Lin (Taiwan)

Section 4: Miscellaneous (Recent Advances and IOL Power Calculations in Difficult Situations)

42.Determining Corneal Power for Intraocular Lens Calculations in Patients with Corneal Scarring and Irregular Astigmatism277

Mujtaba A Qazi, Irwin Y Cua, Jay S Pepose (USA)

43.IOL Calculation in Hyperopes281

Wolfgang Haigis (Germany), Frank J Goes (Belgium)

44.Consistent IOL Calculation in Normal and Odd Eyes with the Raytracing Program OKULIX285

Paul Rolf Preussner (Germany)

45.A-scan in Difficult Situations292

Anand A Shroff (India)

46.Management of Refractive Surprises after Cataract Surgery305

Armando Capote, Eneida de la C Perez, Marcelino Rio (Cuba)

47.Intraocular Lens Power Calculation in the High Myopic Eye314

Fengju Zhang, Yan Wang (China)

48.Calculation of Intraocular Lens Power in Cataract with Silicone Oil Eyes318

Fengju Zhang, Yan Wang (China)

49.Intraoperative IOL Power Calculation320

Arturo Per?Arteaga (Mexico)

50.ZEMAX Raytracing Method for Accommodative IOL327

JT Lin (Taiwan), Minshan Jiang (China)

51.Problems of IOL Power Calculation in Pediatric Cataract Surgery331

Marek E Prost (Poland)

52.Intraocular Lens Calculation after Prior Refractive Surgery337

Kenneth J Hoffer (Santa Monica, CA, USA)

53.Cataract Surgery: Calculating the IOL Power in Case of Anisometropia345

Laure Gobin, Jos J Rozema, Marie-Jos?assignon (Belgium)

54.Review of IOL Power Calculation: A Theoretical Analysis of Proposed Formulas356

Laure Gobin, Jos J Rozema, Marie Jose Tassignon (Belgium)

55.IOL Power Calculation for Cornea Triple and Penetrating Keratoplasty with IOL Exchange368

Ashok Sharma (India)

56.IOL Power Calculations in Eyes with Irregular Corneas371

Barun K Nayak, Sunil Moreker (India)

Index