Comparison of Ziemer FEMTO LDV “Classic” and “Crystal Line” femtosecond laser flap quality by Fourier-domain optical coherence tomography
<b>AIM:</b> To compare the regularity and accuracy of laser <i>in situ</i> keratomileusis (LASIK) flaps created by the Ziemer FEMTO LDV “Classic” (Ziemer “Classic”) and Ziemer FEMTO LDV Crystal Line femtosecond laser (Ziemer Crystal Line).<b>METHODS:</b>Fourier-do...
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| Format: | Article |
| Language: | English |
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Press of International Journal of Ophthalmology (IJO PRESS)
2013-10-01
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| Series: | International Journal of Ophthalmology |
| Subjects: | |
| Online Access: | http://www.ijo.cn/en_publish/2013/5/20130512.pdf |
| _version_ | 1818303305813590016 |
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| author | Jing Zhang Yue-Hua Zhou Lei Tian Chang-Bin Zhai |
| author_facet | Jing Zhang Yue-Hua Zhou Lei Tian Chang-Bin Zhai |
| author_sort | Jing Zhang |
| collection | DOAJ |
| description | <b>AIM:</b> To compare the regularity and accuracy of laser <i>in situ</i> keratomileusis (LASIK) flaps created by the Ziemer FEMTO LDV “Classic” (Ziemer “Classic”) and Ziemer FEMTO LDV Crystal Line femtosecond laser (Ziemer Crystal Line).<b>METHODS:</b>Fourier-domain optical coherence tomography (RTVue OCT) was used tomeasure the morphology of 200 LASIK flaps of 100 consecutive patients created with the Ziemer Classic (100 flaps) or the Ziemer Crystal Line (100 flaps) at one week postoperatively. Flap thickness was evaluated at 36 specified measurement points on each flap. For all procedures with both lasers, the nominal flap thickness was 110µm.<b>RESULTS:</b>The mean flap thickness of the Ziemer Crystal Line group(102.49±2.68µm) was thinner than that of the Ziemer Classic group (107.65±5.09µm) (<i>P</i><0.01). Average thickness of all flaps was uniform within 4µm at all measurement points. The flaps in the Ziemer Crystal Line group were more regular than those in the Ziemer Classic group when measured from the center to the periphery. The maximum deviation from the nominal 110µm of 36 measurements was 8µm in the Ziemer Classic group, while in the Ziemer Crystal Line group it was 9µm. Within the 3 600 measurements on the 100 eyes, differences greater than 20µm were observed 0.14% in the Ziemer Classic group, and 0.04% in the Ziemer Crystal Line group.<b>CONCLUSION:</b>The flaps created with the Ziemer FEMTO LDV Crystal Linefemtosecond laser are more uniform and thinner than those created by the Ziemer FEMTO LDV Classic femtosecond laser. |
| first_indexed | 2024-12-13T05:52:42Z |
| format | Article |
| id | doaj.art-34afa41fe12b4b849b647652bb79cdd4 |
| institution | Directory Open Access Journal |
| issn | 2222-3959 2227-4898 |
| language | English |
| last_indexed | 2024-12-13T05:52:42Z |
| publishDate | 2013-10-01 |
| publisher | Press of International Journal of Ophthalmology (IJO PRESS) |
| record_format | Article |
| series | International Journal of Ophthalmology |
| spelling | doaj.art-34afa41fe12b4b849b647652bb79cdd42022-12-21T23:57:30ZengPress of International Journal of Ophthalmology (IJO PRESS)International Journal of Ophthalmology2222-39592227-48982013-10-016561161710.3980/j.issn.2222-3959.2013.05.11Comparison of Ziemer FEMTO LDV “Classic” and “Crystal Line” femtosecond laser flap quality by Fourier-domain optical coherence tomographyJing ZhangYue-Hua ZhouLei TianChang-Bin Zhai<b>AIM:</b> To compare the regularity and accuracy of laser <i>in situ</i> keratomileusis (LASIK) flaps created by the Ziemer FEMTO LDV “Classic” (Ziemer “Classic”) and Ziemer FEMTO LDV Crystal Line femtosecond laser (Ziemer Crystal Line).<b>METHODS:</b>Fourier-domain optical coherence tomography (RTVue OCT) was used tomeasure the morphology of 200 LASIK flaps of 100 consecutive patients created with the Ziemer Classic (100 flaps) or the Ziemer Crystal Line (100 flaps) at one week postoperatively. Flap thickness was evaluated at 36 specified measurement points on each flap. For all procedures with both lasers, the nominal flap thickness was 110µm.<b>RESULTS:</b>The mean flap thickness of the Ziemer Crystal Line group(102.49±2.68µm) was thinner than that of the Ziemer Classic group (107.65±5.09µm) (<i>P</i><0.01). Average thickness of all flaps was uniform within 4µm at all measurement points. The flaps in the Ziemer Crystal Line group were more regular than those in the Ziemer Classic group when measured from the center to the periphery. The maximum deviation from the nominal 110µm of 36 measurements was 8µm in the Ziemer Classic group, while in the Ziemer Crystal Line group it was 9µm. Within the 3 600 measurements on the 100 eyes, differences greater than 20µm were observed 0.14% in the Ziemer Classic group, and 0.04% in the Ziemer Crystal Line group.<b>CONCLUSION:</b>The flaps created with the Ziemer FEMTO LDV Crystal Linefemtosecond laser are more uniform and thinner than those created by the Ziemer FEMTO LDV Classic femtosecond laser.http://www.ijo.cn/en_publish/2013/5/20130512.pdflaser in situ keratomileusisflap thicknessfemtosecond laserfourier-domain optical coherence tomography |
| spellingShingle | Jing Zhang Yue-Hua Zhou Lei Tian Chang-Bin Zhai Comparison of Ziemer FEMTO LDV “Classic” and “Crystal Line” femtosecond laser flap quality by Fourier-domain optical coherence tomography International Journal of Ophthalmology laser in situ keratomileusis flap thickness femtosecond laser fourier-domain optical coherence tomography |
| title | Comparison of Ziemer FEMTO LDV “Classic” and “Crystal Line” femtosecond laser flap quality by Fourier-domain optical coherence tomography |
| title_full | Comparison of Ziemer FEMTO LDV “Classic” and “Crystal Line” femtosecond laser flap quality by Fourier-domain optical coherence tomography |
| title_fullStr | Comparison of Ziemer FEMTO LDV “Classic” and “Crystal Line” femtosecond laser flap quality by Fourier-domain optical coherence tomography |
| title_full_unstemmed | Comparison of Ziemer FEMTO LDV “Classic” and “Crystal Line” femtosecond laser flap quality by Fourier-domain optical coherence tomography |
| title_short | Comparison of Ziemer FEMTO LDV “Classic” and “Crystal Line” femtosecond laser flap quality by Fourier-domain optical coherence tomography |
| title_sort | comparison of ziemer femto ldv classic and crystal line femtosecond laser flap quality by fourier domain optical coherence tomography |
| topic | laser in situ keratomileusis flap thickness femtosecond laser fourier-domain optical coherence tomography |
| url | http://www.ijo.cn/en_publish/2013/5/20130512.pdf |
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