Consultancy in Ophthalmic Implants

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Publicatons (papers, letters, chapters, manuscripts)

IOL Power Calculation

4.   Norrby NES. The lens haptic plane (LHP) a fixed reference for IOL implant power calculation. Eur J Implant Refract Surg 1995; 7:202-209

8.   Norrby NES, Koranyi G. Prediction of IOL power using the lens haptic plane (LHP) concept. J Cataract Refract Surg 1997; 254-259

9.   Norrby NES. Unfortunate discrepancies. Letter to J Cataract Refract Surg 1998; 24:433
15. Norrby NES. IOL registry and errors in A-scan. Letter to J Cataract Refract Surg 2000; 26:159-160
18. NorrbyS. Multicenter biometry study of 1 pair of eyes. J Cataract Refract Surg 2001; 27:1656-1661
Koranyi G, Lydahl E, Norrby S, Taube M. Anterior chamber depth measurement: A-scan versus optical methods. J Cataract Refract Surg 2002; 28:243-247

25. Norrby S, Lydahl E, Koranyi G, Taube M. Comparison of 2 A-scans. J Cataract Refract Surg 2003; 29:95-99
26. Norrby S, Lydahl E, Koranyi G, Taube M. Reduction of trend errors in power calculation by linear transformation of measured axial lengths. J Cataract Refract Surg 2003; 29:100-105

34. Norrby S. Using the lens haptic plane concept and thick-lens ray tracing to calculate intraocular lens power. J Cataract Refract Surg 2004; 30:1000-1005
36. Norrby S.Keratometry after corneal refractive surgery. Letter to J Cataract Refract Surg 2005; 31:256-257
37. Norrby S, Lydahl E, Koranyi G, Taube M. Clinical application of the lens haptic plane concept with transformed axial lengths. J Cataract Refract Surg 2005; 31:1338-1344

45. Norrby S
. Pentacam keratometry and IOL power calculation. Letter to J Cataract Refract Surg 2008; 34:3. Reply Borasio E; 34:4
46. Norrby S. Sources of error in intraocular lens power calculation. J Cataract Refract Surg 2008; 34:368-376
49. Norrby S. Issues in IOL power calculation in general and after previous refractive surgery in particular. In: Goes F, ed. Lens surgery after previous refractive surgery. New Delhi, Jaypee Brothers Medical Publishers 2011; 36-41 (Chapter 5)

Ocular and Physiological Optics

5.   Norrby NES. Standardized methods for assessing the imaging quality of intraocular lenses. Appl Optics 1995; 34:7327-7333

6.   Norrby NES, Grossman LW, Geraghty EP, Kreiner CF, Mihori M, PatelAS, Portney V, Silberman DM. Accuracy in determining introcular lens dioptric power assessed by interlaboratory tests. J Cataract Refract Surg 1996; 22:983-993

7.   Kugelberg U, Zetterström C, Lundgren B, Norrby S, Syrén-Nordqvist S. After-cataract and ocular growth in new-born rabbits implanted with a capsule-tension ring. J Cataract Refract Surg 1997; 23:635-640
10. Norrby NES, Grossman LW, Geraghty EP, Kreiner CF, Mihori M, Patel AS, Portney V, Silberman DM. Determination of the imaging quality of intraocular lenses. J Cataract Refract Surg 1998; 24:703-714

11. Norrby NES, Philipson BT. Optical modeling of the eye with real gradient index description of the lens. Submitted to Invest Ophthalmol Vis Sci 1998; not accepted (ARVO poster and manuscript available)

12. Guirao A, Redondo M, Gonzalez C, Geraghty E, Norrby S, Artal P. Average optical performance of the human eye as a function of age in a normal population. Invest Ophthalmol Vis Sci 1999; 40:203-213

13. Nio YK, Jansonius NM, Fidler V, Geraghty E, Norrby S, Kooijman AC. Age-related changes of defocus-specific contrast sensitivity in

healthy subjects. Ophthal Physiol Opt 2000; 20:323-334

14. Norrby NES, Koretz JF. Optical modeling with measured eye parameters. An Inst Barraquer 1999; 28:139-142

21. NioYK, JansoniusNM, Fidler V, Geraghty E, Norrby S, Kooijman AC. Spherical and irregular aberrations are important for the optimal performance of the human eye. Ophthalmic Physiol Opt 2002; 22:103-112

23. Guirao A, Redondo M, Geraghty E, Piers P, Norrby S, Artal P. Corneal optical aberrations and retinal image quality in patients in whom monofocal intraocular lenses were implanted. Arch Ophthalmol 2002; 120:1143-1151

24. Holladay JT, Piers PA, Koranyi G, Mooren M van der, Norrby NES. A new intraocular lens design to reduce spherical aberration of pseudophakic eyes. J Refract Surg 2002; 18:683-691

27. Artal P, Guirao A, Berrio E, Piers P, Norrby S. Optical aberrations and the aging eye. In: Packer M, Fine HI, Hoffman RS, eds., Functional vision. International ophthalmology clinics 2003; 43(2):63-77, Philadelphia, Pennsylvania, Lippincott, Williams & Wilkins

29. Nio YK, Jansonius NM, Geraghty E, Norrby S, Kooijman AC. Effect of intraocular lens implantation on visual acuity, contrast sensititivy, and depth of focus. J Cataract Refract Surg 2003; 29:2073-2081
30. NioYK, JansoniusNM, Wijdh RHJ, Beekhuis WH, Worst JGF, Norrby S, Kooijman AC. Effect of methods of myopia correction on visual acuity, contrast sensitivity, and depth of focus. J Cataract Refract Surg 2003; 29:2082-2095
31. Piers P, Norrby NES, Mester U. Aberration-correcting intraocular lenses. In: Krueger RR, Applegate RA, MacRae SM, eds. Wavefront customized visual correction – The quest for super vision II. Thorofare, New Jersey, Slack, 2004; 285-290
32. Piers PA, Norrby NES, Mester U. Eye models for the prediction of contrast vision in patients with new intraocular lens designs. Optics Letters 2004; 29:733-735

33. Piers PA, Fernandez EJ, Manzanera S, Norrby S, Artal P. Adaptive optics simulation of intraocular lenses with modified spherical aberration. Invest Ophthalmol Vis Sci 2004; 45:4601-4610
35. Norrby S. The Dubbelman eye model analyzed by ray tracing through aspheric surfaces. Ophthal Physiol Opt 2005; 25:153-161

40. Norrby S. Imaging quality of intraocular lenses. Letter to J Cataract Refract Surg 2006; 32:545-546

43. Piers PA, Weeber HA, Artal P, Norrby S. Design and performance of customized IOLs. J Refract Surg 2007; 23:374-384
44. Norrby S, Piers P, Campbell C, van der Mooren M. Model eyes for evaluation of intraocular lenses. Applied Optics 2007; 46:6595-6605
47. Norrby S. The ISO eye model should not be used to assess aspheric lenses. Letter to J Cataract Refract Surg 2008; 34:1056-1057

Materials for Artificial Crystalline Lenses

16. Groot JH de, Beijma FJ van, Haitjema HJ, Dillingham KA, Hodd KA, Koopmans SA, Norrby S. Injectable intraocular lens materials based upon hydrogels. Biomacromolecules 2001; 2:628-634

17. Groot JH de, Zurutuza A, Moran CR, Graham NB, Hodd KA, Norrby S. Water-soluble microgels made by radical polymerization in solution. Colloid Polym Sci 2001; 279:1219-1224

19. Groot JH de, Dillingham K, Deuring H, Haitjema HJ, Beijma F van, Hodd K, Norrby S. Hydrophilic polymeric acylphospine oxide photoinitiators/crosslinkers for in vivo blue-light photopolymerization. Biomacromolecules 2001; 2:1271-1278

20. Groot JH de, Spaans CJ, Calck RV van, Beijma FJ van, Norrby S, Pennings AJ. Novel hydrogels for ophthalmic applications based on poly(1-hydroxy-1,3-propandiyl) networks. Polym Mat: Sci Eng 2002; 87: 489-490

28. Groot JH de, Spaans CJ, Calck RV van, Beijma FJ van, Norrby S, Pennings AJ. Hydrogels for an accommodating intraocular lens. An explorative study. Biomacromolecules 2003; 4:608-616

38. Norrby S. Injectable polymer. In: Fine IH, Hoffman RS, Packer M, eds. Refractive lens surgery. Berlin, Heidelberg, Springer-Verlag 2005; 173-186 (Chapter 18)
39. Norrby S, Koopmans S, Terwee T. Artificial crystalline lens. Ophthalmol Clin N Am 2006; 19:143-146

41. Koopmans SA, Terwee T, Glasser A, Wendt M, Vilipuru A, van Kooten T, Haitjema HJ, Norrby S, Kooijman AC. Accommodative lens refilling in rhesus monkeys. Invest Ophthalmol Vis Sci 2006; 47:2976-2984

42. van Kooten TG, Knol AJ, Koopmans S, Hooymans JMM, Norrby S, Terwee T, Busscher HJ. Development of an accommodating intra-ocular lens – In vitro prevention of re-growth of pig and rabbit lens capsule epithelial cells. Biomaterials 2006; 27:5554-5560

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