Contact Lens & Anterior Eye
Volume 30, Issue 2 , Pages 119-124 , May 2007

Is randomisation necessary for measuring defocus curves in pre-presbyopes?

References 

  1. Wang B, Ciuffreda KJ. Depth-of-focus of the human eye in the near retinal periphery. Vision Res. 2004;44:1115–1125
  2. Pieh S, Kellner C, Hanselmayer G, Lackner B, Schmidinger G, Walkow T, et al. Comparison of visual acuities at different distances and defocus curves. J Cataract Refract Surg. 2002;28:1964–1967
  3. Rabin J. Optical defocus: differential effects on size and contrast letter recognition thresholds. Invest Ophthalmol Vis Sci. 1994;35:646–648
  4. Myers GA, Stark L. Topology of the near response triad. Ophthalmic Physiol Opt. 1990;10:175–181
  5. Trager MJ, Vagefi RM, McLeod SD. A mathematical model for estimating degree of accommodation by defocus curves. Invest Ophthalmol Vis Sci. 2005;46:B691
  6. Ostrin LA, Glasser A. Accommodation measurements in a prepresbyopic and presbyopic population. J Cataract Refract Surg. 2004;30:1435–1444
  7. Wold JE, Hu A, Chen S, Glasser A. Subjective and objective measurement of human accommodative amplitude. J Cataract Refract Surg. 2003;29:1878–1888
  8. Langenbucher A, Seitz B, Huber S, Nguyen NX, Kuchle M. Theoretical and measured pseudophakic accommodation after implantation of a new accommodative posterior chamber intraocular lens. Arch Ophthalmol. 2003;121:1722–1727
  9. Knorz MC, Claessens D, Schaefer RC, Seiberth V, Liesenhoff H. Evaluation of contrast acuity and defocus curve in bifocal and monofocal intraocular lenses. J Cataract Refract Surg. 1993;19:513–523
  10. Weghaupt H, Pieh S, Skorpik C. Visual properties of the foldable Array multifocal intraocular lens. J Cataract Refract Surg. 1996;22(Suppl. 2):1313–1317
  11. Jacobi FK, Kammann J, Jacobi KW, Grosskopf U, Walden K. Bilateral implantation of asymmetrical diffractive multifocal intraocular lenses. Arch Ophthalmol. 1999;117:17–23
  12. Weghaupt H, Pieh S, Skorpik C. Comparison of pseudoaccommodation and visual quality between a diffractive and refractive multifocal intraocular lens. J Cataract Refract Surg. 1998;24:663–665
  13. Walkow L, Klemen UM. Patient satisfaction after implantation of diffractive designed multifocal intraocular lenses in dependence on objective parameters. Graefes Arch Clin Exp Ophthalmol. 2001;239:683–687
  14. Langenbucher A, Huber S, Nguyen NX, Seitz B, Gusek-Schneider GC, Kuchle M. Measurement of accommodation after implantation of an accommodating posterior chamber intraocular lens. J Cataract Refract Surg. 2003;29:677–685
  15. Kuchle M, Seitz B, Langenbucher A, Gusek-Schneider GC, Martus P, Nguyen NX. Comparison of 6-month results of implantation of the 1CU accommodative intraocular lens with conventional intraocular lenses. Ophthalmology. 2004;111:318–324
  16. Heatley CJ, Spalton DJ, Hancox J, Kumar A, Marshall J. Fellow eye comparison between the 1CU accommodative intraocular lens and the Acrysof MA30 monofocal intraocular lens. Am J Ophthalmol. 2005;140:207–213
  17. Sauder G, Degenring RF, Kamppeter B, Hugger P. Potential of the 1 CU accommodative intraocular lens. Br J Ophthalmol. 2005;89:1289–1292
  18. Plakitsi A, Charman N. Comparison of the depths of focus with the naked eye and with three types of presbyopic contact lens correction. J Br Contact Lens Assoc. 1995;18:119–125
  19. Altman DG, Bland JM. Statistics notes. Treatment allocation in controlled trials: why randomise?. BMJ. 1999;318:1209
  20. Manny RE, Hussein M, Gwiazda J, Marsh-Tootle W. Repeatability of ETDRS visual acuity in children. Invest Ophthalmol Vis Sci. 2003;44:3294–3300
  21. Raasch TW, Bailey IL, Bullimore MA. Repeatability of visual acuity measurement. Optom Vis Sci. 1998;75:342–348
  22. Bailey IL, Lovie JE. New design principles for visual acuity letter charts. Am J Optom Physiol Opt. 1976;53:740–745
  23. Pandit JC. Testing acuity of vision in general practice: reaching recommended standard. BMJ. 1994;309:1408

☆ This study was presented at the British Society for Refractive Surgery Annual Conference 2006 and at the European Society of Cataract and Refractive Surgeons Annual Conference 2006.

PII: S1367-0484(07)00029-X

doi: 10.1016/j.clae.2007.02.005

Contact Lens & Anterior Eye
Volume 30, Issue 2 , Pages 119-124 , May 2007

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