Effects of optical diameter of intraocular lenses with intrascleral fixation on higher-order aberrations
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...
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| Format: | Article |
| Language: | English |
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BMC
2017-06-01
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| Series: | BMC Ophthalmology |
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| Online Access: | http://link.springer.com/article/10.1186/s12886-017-0478-3 |
| _version_ | 1811265120594034688 |
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| author | Daisuke Kunita Makoto Inoue Yuji Itoh Naoko Matsuki Toshiyuki Nagamoto Akito Hirakata |
| author_facet | Daisuke Kunita Makoto Inoue Yuji Itoh Naoko Matsuki Toshiyuki Nagamoto Akito Hirakata |
| author_sort | Daisuke Kunita |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-12T20:17:00Z |
| format | Article |
| id | doaj.art-41f8b0bd6be44133bf31b2443e33b438 |
| institution | Directory Open Access Journal |
| issn | 1471-2415 |
| language | English |
| last_indexed | 2024-04-12T20:17:00Z |
| publishDate | 2017-06-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Ophthalmology |
| spelling | doaj.art-41f8b0bd6be44133bf31b2443e33b4382022-12-22T03:18:05ZengBMCBMC Ophthalmology1471-24152017-06-011711810.1186/s12886-017-0478-3Effects of optical diameter of intraocular lenses with intrascleral fixation on higher-order aberrationsDaisuke Kunita0Makoto Inoue1Yuji Itoh2Naoko Matsuki3Toshiyuki Nagamoto4Akito Hirakata5Kyorin Eye Center, Kyorin University, School of MedicineKyorin Eye Center, Kyorin University, School of MedicineKyorin Eye Center, Kyorin University, School of MedicineKyorin Eye Center, Kyorin University, School of MedicineKyorin Eye Center, Kyorin University, School of MedicineKyorin Eye Center, Kyorin University, School of MedicineAbstract 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.http://link.springer.com/article/10.1186/s12886-017-0478-3Cataract surgeryIntraocular lensOphthalmic opticsWavefront analysis |
| spellingShingle | Daisuke Kunita Makoto Inoue Yuji Itoh Naoko Matsuki Toshiyuki Nagamoto Akito Hirakata Effects of optical diameter of intraocular lenses with intrascleral fixation on higher-order aberrations BMC Ophthalmology Cataract surgery Intraocular lens Ophthalmic optics Wavefront analysis |
| title | Effects of optical diameter of intraocular lenses with intrascleral fixation on higher-order aberrations |
| title_full | Effects of optical diameter of intraocular lenses with intrascleral fixation on higher-order aberrations |
| title_fullStr | Effects of optical diameter of intraocular lenses with intrascleral fixation on higher-order aberrations |
| title_full_unstemmed | Effects of optical diameter of intraocular lenses with intrascleral fixation on higher-order aberrations |
| title_short | Effects of optical diameter of intraocular lenses with intrascleral fixation on higher-order aberrations |
| title_sort | effects of optical diameter of intraocular lenses with intrascleral fixation on higher order aberrations |
| topic | Cataract surgery Intraocular lens Ophthalmic optics Wavefront analysis |
| url | http://link.springer.com/article/10.1186/s12886-017-0478-3 |
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