Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/62915
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Type: Journal article
Title: Ocular preference following implantation of aspheric and spherical intraocular lenses; an intra-individual comparison
Author: Landers, J.
Goggin, M.
Citation: Clinical and Experimental Optometry, 2010; 93(6 Sp Iss):419-425
Publisher: Wiley-Blackwell Publishing Ltd
Issue Date: 2010
ISSN: 0816-4622
1444-0938
Statement of
Responsibility: 
John Landers, Michael Goggin
Abstract: Purpose:  Recently, intraocular lenses (IOLs) that possess an aspheric design, compensating for the spherical aberration (SA) of the cornea, have been developed. We designed this study to compare a group of patients who had undergone bilateral cataract surgery and had received one spherical IOL and one aspheric IOL, to assess their ocular preference. Methods:  Patients were recruited from those who had undergone bilateral cataract surgery during the preceding six months (32 patients). Types of aspheric IOLs, which were used included: Tecnis ZA9003, AcrysofIQ SN60WF and Akreos Adapt AO. Contrast acuity was measured using a CSV-1000CVA instrument and spherical aberration (SA) was measured using a Zywave aberrometer. Patients also answered a brief questionnaire, designed to determine whether they could detect any difference between their spherical and aspheric IOLs and whether they had an ocular preference. Results:  No differences were found between spherical and aspheric IOLs in contrast acuity. Total ocular spherical aberration was greater among eyes with spherical IOLs compared with aspheric IOLs (t = 6.67; p < 0.0001). Patients' ocular preference was unrelated to the presence of an aspheric IOL or the amount of spherical aberration, but was associated with the level of ametropia and visual acuity. Conclusions:  We were unable to find any impact on a patient's subjective visual quality from a reduction of spherical aberration by the presence of an aspheric IOL. Ocular preference was determined by level of visual acuity and degree of ametropia post-operatively.
Keywords: ametropia; aspheric; intraocular lens; ocular preference; spherical aberration
Rights: © 2010 The Authors. Clinical and Experimental Optometry © 2010 Optometrists Association Australia
RMID: 0020101324
DOI: 10.1111/j.1444-0938.2010.00513.x
Appears in Collections:Surgery publications

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