| Influence of the pupil size on visual quality and spherical aberration after implantation of the Tecnis 1-piece intraocular lens. | |
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MedLine Citation:
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PMID: 20576769 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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PURPOSE: To evaluate the influence of the pupil size on clinical results and objective parameters of optical quality of the Tecnis 1-piece (ZCB00) intraocular lens. SETTING: Centre of Ophthalmology, Eberhard-Karls University Tübingen, Germany. METHODS: In this study 51 eyes were implanted with a Tecnis 1-piece IOL. Best corrected visual acuity (BCVA) and uncorrected visual acuity (UCVA) were assessed postoperatively. Total spherical aberration and corneal spherical aberration for optical zones of 3, 4, 5 and 6 mm were measured. Contrast sensitivity and depth of focus were evaluated with a 3 mm and 5 mm pinhole (PH). RESULTS: The mean follow-up time was 3.0 ± 0.4 months. Mean UCVA and BCVA were 20/25 ± 8 letters and 20/18 ± 4 letters, respectively. BCVA with both a 3 and a 5 mm PH was 20/18 ± 4 letters. The corneal spherical aberration was 0.02 ± 0.01, 0.06 ± 0.03, 0.14 ± 0.09 and 0.27 ± 0.22 for 3, 4, 5 and 6 mm optical zones. Mean total spherical aberration was -0.01 ± 0.02, 0.0 ± 0.03, 0.0 ± 0.06 and 0.0 ± 0.08 μm for 3, 4, 5 and 6 mm optical zones, respectively. Contrast sensitivity was not statistically significant different with a 5 mm or 3 mm PH. In addition, the defocus curves with a 3 mm and a 5 mm PH were not statistically significant different. CONCLUSION: The aspheric profile of the Tecnis 1-piece IOL reduces total spherical aberration to virtually zero at all pupil sizes from 3-6 mm. Thus, visual acuity, contrast sensitivity, refraction and defocus curve show the same good results at large pupil sizes compared with small pupil sizes. |
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Authors:
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Katrin Petermeier; Charlotte Frank; Florian Gekeler; Martin S Spitzer; Andre Messias; Peter Szurman |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-06-24 |
Journal Detail:
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Title: The British journal of ophthalmology Volume: 95 ISSN: 1468-2079 ISO Abbreviation: Br J Ophthalmol Publication Date: 2011 Jan |
Date Detail:
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Created Date: 2010-12-17 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0421041 Medline TA: Br J Ophthalmol Country: England |
Other Details:
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Languages: eng Pagination: 42-5 Citation Subset: IM |
Affiliation:
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University Eye Hospital, Centre of Ophthalmology, Eberhard-Karls University, Tuebingen, Germany. katrin.petermeier@med.uni-tuebingen.de |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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