Comparison of higher-order aberrations and contrast sensitivity between Tecnis Z9001 and CeeOn 911A intraocular lenses: a prospective randomized study

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Author:
CHEN Wei-rong()
YE He-hua()
QIAN Yi-yong()
YANG Wen-hui()
LIN Zhi-hong()
Journal Title:
CHINESE MEDICAL JOURNAL
Issue:
Volume 119, Issue 21, 2006
DOI:
Key Word:
aspheric intraocular lens;higher-order aberrations;contrast sensitivity

Abstract´╝Ü Background The advent of wavefront technology in the past five years has provided some insight into the optical outcomes of cataract surgery. The Tecnis Z9001 intraocular lens (Tecnis IOL, AMO) with a modified prolate anterior surface was claimed to reduce or even eliminate ocular spherical aberration to improve the visual quality. The purpose of this study was to determine whether Tecnis IOLs can improve the quality of vision as evaluated by measuring visual acuity, wavefront aberration, and contrast sensitivity.Methods In an intraindividual prospective study, 20 patients with bilateral cataract were randomly assigned to receive a modified prolate anterior surface IOL (Tecnis Z9001, AMO) in one eye and a biconvex spherical surface IOL (CeeOn 911A, AMO) in the other. After 3 months, the following were investigated: best corrected visual acuity, pupil diameter, photopic and mesopic contrast sensitivity, and wavefront aberration of the whole eye (ocular), cornea, and internal plane.Results The differences in the best corrected visual acuity and pupil diameter between the two groups were not statistically significant. Negative 4th-order spherical aberration (Z40) was found in the Tecnis group, whereas positive Z40 found in the CeeOn group for the internal and ocular plane. Statistically significant differences were found at the ocular higher-aberrations between the two IOLs. Contrast sensitivity testing showed significantly better results in the Tecnis group at visual angles higher than 1.0 degree under photopic conditions and at visual angles higher than 1.6 degree under mesopic conditions both without glare and with glare in comparison with the CeeOn group.Conclusions The Tecnis Z9001 IOL with a modified prolate anterior surface produces negative spherical aberration and consequently reduces the higher-order aberrations in pseudophakic eyes. This leads to enhanced contrast sensitivity and improved functional vision compared to conventional spherical IOLs.

  • [1]Dick HB,Krummenauer F,Schwenn O,Krist R,Pfeiffer N.Objective and subjective evaluation of photic phenomena after monofocal and multifocal intraocular lens implantation.Ophthalmology 1999; 106:1878-1886.
  • [2]Holladay JT,Piers PA,Koranyi G,van der Mooren M,Norrby NE.A new intraocular lens design to reduce spherical aberration of pseudophakic eyes.J Refract Surg 2002; 18:683-691.
  • [3]Thibos LN,Applegate RA,Schwiegerling JT,Webb R.Standards for reporting the optical aberrations of eyes.In:MacRae SM,Krueger RR,Applegate RA,eds.Customized corneal ablation:the quest for supervision.Thorofare:Slack; 2001:348-361.
  • [4]Hayashi K,Hayashi H,Nakao F,Hayashi F.Correlation between posterior capsule opacification and visual function before and after Neodymium:YAG lasr posterior capsulotomy.Am J Ophthalmol 2003; 136:720-726.
  • [5]Koch DD,Jardeleza TL,Emery JM,Franklin D.Glare following posterior chamber intraocular lens implantation.J Cataract Refract Surg 1986; 12:480-484.
  • [6]Erie JC,Bandhauer MH,McLaren JW.Analysis of postoperative glare and intraocular lens design.J Cataract Refract Surg 2001; 27:614-621.
  • [7]Uchio E,Ohno S,Kusakawa T.Spherical aberration and glare disability with intraocular lenses of different optical designs.J Cataract Refract Surg 1995; 21:690-696.
  • [8]Nio YK,Jansonius NM,Fidler V,Geraghty E,Norrby S,Kooijman AC.Age-related changes of defocus-specific contrast sensitivity in healthy subjects.Ophthalmic Physiol Opt 2000; 20:323-334.
  • [9]Artal P,Berrio E,Guirao A,Piers P.Contribution of the cornea and internal surfaces to the change of ocular aberrations with age.J Opt Soc Am A 2002; 19:137-143.
  • [10]Packer M,Fine IH,Hoffman RS,Piers PA.Prospective randomized trial of an anterior surface modified prolate intraocular lens.J Refract Surg 2002; 18:692-696.
  • [11]Kershner RM.Retinal image contrast and functional visual performance with aspheric,silicone,and acrylic intraocular lenses.J Cataract Refract Surg 2003; 29:1684-1694.
  • [12]Mester U,Dillinger P,Anteris N.Impact of a modified optic design on visual function:clinical comparative study.J Cataract Refract Surg 2003; 29:652-660.
  • [13]Bellucci R,Scialdone A,Buratto L,Morselli S,Chierego C,Criscuoli A,et al.Visual acuity and contrast sensitivity comparison between Tecnis and AcrySof SA60AT intraocular lenses:A multicenter randomized study.J Cataract Refract Surg 2005; 31:712-717.
  • [14]Ricci F,Scuderi G,Missiroli F,Regine F,Cerulli A.Low contrast visual acuity in pseudophakic patients implanted with an anterior surface modified prolate intraocular lens.Acta Ophthalmol Scand 2004; 82:718-722.
  • [15]Lord SR,Dayhew J.Visual risk factors for falls in older people.J Am Geriatr Soc 2001; 49:508-515.
  • [16]Owsley C,Stalvey BT,Wells J,Sloane ME,McGwin G Jr.Visual risk factors for crash involvement in older drivers with cataract.Arch Ophthalmol 2001; 119:881-887.
  • [17]Bellucci R,Morselli S,Piers P.Comparison of wavefront aberrations and optical quality of eyes implanted with five different intraocular lenses.J Refract Surg 2004; 20:297-306.
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