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BMC Ophthalmology
Published in: BMC Ophthalmology 1/2017

Open Access 01-12-2017 | Research article

Effects of optical diameter of intraocular lenses with intrascleral fixation on higher-order aberrations

Authors: Daisuke Kunita, Makoto Inoue, Yuji Itoh, Naoko Matsuki, Toshiyuki Nagamoto, Akito Hirakata

Published in: BMC Ophthalmology | Issue 1/2017

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Abstract

Background

Intrascleral fixation of an intraocular lens (IOL) is used in eyes that lack capsular support. The aim of the study is to determine whether a larger optical diameter IOL will decrease the higher-order aberrations (HOAs) when the haptics are extended for intrascleral fixation than a smaller diameter IOL.

Methods

Three-piece acrylic IOLs with 6.0 mm optics (X-60, VA-60BBR) and 7.0 mm optics (X-70, VA-70 AD) were fixed at lengths of 13, 14, 15, 16, or 17 mm. A wavefront analyzer was used to measure the HOAs within the central 3.0 and 5.2 mm optic diameter.

Results

The astigmatic aberration within the central 5.2 mm was greater than that within the central 3.0 mm for all IOLs. The HOAs increased significantly with an extension of the IOLs with both optical diameters (P < 0.001). The coma aberration within the central 5.2 mm was greater than that within the central 3.0 mm but it did not increase with an extension of the haptics. The astigmatic aberration of the X-60 IOL was significantly greater than that of the X-70 only at an extension of 17 mm. The astigmatic aberration of the VA-70 AD was not significantly different from that of the VA-60BBR. The cylindrical power changed from 0.047 D in the X-60 to 0.118 D in the VA-70 AD when the IOLs were extended from 13 to 17 mm.

Conclusion

When three-piece IOLs are highly extended for intrascleral fixation, the astigmatic aberration increases significantly. However, IOLs with 7 mm optics do not have less astigmatic and coma aberrations than IOLs with 6 mm optics.
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Metadata
Title
Effects of optical diameter of intraocular lenses with intrascleral fixation on higher-order aberrations
Authors
Daisuke Kunita
Makoto Inoue
Yuji Itoh
Naoko Matsuki
Toshiyuki Nagamoto
Akito Hirakata
Publication date
01-12-2017
Publisher
BioMed Central
Published in
BMC Ophthalmology / Issue 1/2017
Electronic ISSN: 1471-2415
DOI
https://doi.org/10.1186/s12886-017-0478-3

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