Short-term changes of corneal biomechanical properties after FS- LASIK
AIM:To investigate the changes of corneal biomechanics after Femto LDV laser flapping in laser <i>in situ </i>keratomileusis(LASIK). <p>METHODS: Preoperatively, 3 months, 6 months after LASIK, 93 myopia patients(186 eyes)in flapping procedure by Femto LDV laser were examined by Ocu...
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2013-12-01
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Online Access: | http://www.ies.net.cn/cn_publish/2013/12/201312060.pdf |
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doaj-99aa8ce37d9140db9a28e525f16e2ba02020-11-24T22:12:44ZengPress of International Journal of Ophthalmology (IJO PRESS)Guoji Yanke Zazhi1672-51232013-12-0113122554255610.3980/j.issn.1672-5123.2013.12.60Short-term changes of corneal biomechanical properties after FS- LASIKFu-Sheng LiHong-Zhi YinWei-Li AnYu-Ling MengSheng-Lan WeiLi WangMei-Feng LiYue-Hua ZhouAIM:To investigate the changes of corneal biomechanics after Femto LDV laser flapping in laser <i>in situ </i>keratomileusis(LASIK). <p>METHODS: Preoperatively, 3 months, 6 months after LASIK, 93 myopia patients(186 eyes)in flapping procedure by Femto LDV laser were examined by Ocular response analyzer(ORA). The central corneal thickness(CCT)was also measured by ultrasonic pachymetry. Parameters were compared between postoperative(3 months)and preoperative, postoperative(6 months). Comparisons included the corneal thickness and corneal compensated intraocular pressure(Iopcc), Goldmann correlated IOP value(Iopg), corneal resistance factor(CRF), corneal hysteresis(CH). <p>RESULTS:The CCT(447.61±39.57μm)were significantly changed comparing with preoperative(539.88±29.72μm)(<i>t</i>=-47.223; <i>P</i>=0.000). The CCT of 6 months postoperative(448.78±39.19μm)was slightly thicker than that of 3 months'(<i>t</i>=2.15,<i>P</i>=0.033). Iopcc, Iopg of 3 months after LASIK(13.75±2.13, 9.54±2.35)mmHg were significantly changed comparing with preoperative(16.29±2.88, 15.09±3.29 )mmHg(<i>t</i>=-13.604, -23.594; <i>P</i>=0.000, 0.000). The difference was(2.55±2.25, 5.55±3.21)mmHg. There were no significant changes between Iopcc, Iopg of 6 months(13.61±1.96,9.32±2.07)mmHg and that of 3 months after LASIK. CRF and CH of 3 months after LASIK(6.36±1.45,7.71±1.30)mmHg were significantly changed comparing with preoperative's(9.84±1.99,9.77±1.56)mmHg(<i>t</i>=-24.116, -19.171; <i>P</i>=0.000, 0.000). The difference was(3.49±1.97, 2.06±1.47)mmHg. There were no statistical differences between 6 months(6.24±1.38, 7.67±1.25)mmHg and 3 months(<i>t</i>=1.456, 0.636; <i>P</i>=0.147, 0.525).<p>CONCLUSION: The corneal biomechanical properties after FS- LASIK are lower than that of preoperative. Corneal biomechanics sustains steadily about 3 months after LASIK.http://www.ies.net.cn/cn_publish/2013/12/201312060.pdffemtosecond lasercorneal thicknesscorneal biomechanics |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Fu-Sheng Li Hong-Zhi Yin Wei-Li An Yu-Ling Meng Sheng-Lan Wei Li Wang Mei-Feng Li Yue-Hua Zhou |
spellingShingle |
Fu-Sheng Li Hong-Zhi Yin Wei-Li An Yu-Ling Meng Sheng-Lan Wei Li Wang Mei-Feng Li Yue-Hua Zhou Short-term changes of corneal biomechanical properties after FS- LASIK Guoji Yanke Zazhi femtosecond laser corneal thickness corneal biomechanics |
author_facet |
Fu-Sheng Li Hong-Zhi Yin Wei-Li An Yu-Ling Meng Sheng-Lan Wei Li Wang Mei-Feng Li Yue-Hua Zhou |
author_sort |
Fu-Sheng Li |
title |
Short-term changes of corneal biomechanical properties after FS- LASIK |
title_short |
Short-term changes of corneal biomechanical properties after FS- LASIK |
title_full |
Short-term changes of corneal biomechanical properties after FS- LASIK |
title_fullStr |
Short-term changes of corneal biomechanical properties after FS- LASIK |
title_full_unstemmed |
Short-term changes of corneal biomechanical properties after FS- LASIK |
title_sort |
short-term changes of corneal biomechanical properties after fs- lasik |
publisher |
Press of International Journal of Ophthalmology (IJO PRESS) |
series |
Guoji Yanke Zazhi |
issn |
1672-5123 |
publishDate |
2013-12-01 |
description |
AIM:To investigate the changes of corneal biomechanics after Femto LDV laser flapping in laser <i>in situ </i>keratomileusis(LASIK). <p>METHODS: Preoperatively, 3 months, 6 months after LASIK, 93 myopia patients(186 eyes)in flapping procedure by Femto LDV laser were examined by Ocular response analyzer(ORA). The central corneal thickness(CCT)was also measured by ultrasonic pachymetry. Parameters were compared between postoperative(3 months)and preoperative, postoperative(6 months). Comparisons included the corneal thickness and corneal compensated intraocular pressure(Iopcc), Goldmann correlated IOP value(Iopg), corneal resistance factor(CRF), corneal hysteresis(CH). <p>RESULTS:The CCT(447.61±39.57μm)were significantly changed comparing with preoperative(539.88±29.72μm)(<i>t</i>=-47.223; <i>P</i>=0.000). The CCT of 6 months postoperative(448.78±39.19μm)was slightly thicker than that of 3 months'(<i>t</i>=2.15,<i>P</i>=0.033). Iopcc, Iopg of 3 months after LASIK(13.75±2.13, 9.54±2.35)mmHg were significantly changed comparing with preoperative(16.29±2.88, 15.09±3.29 )mmHg(<i>t</i>=-13.604, -23.594; <i>P</i>=0.000, 0.000). The difference was(2.55±2.25, 5.55±3.21)mmHg. There were no significant changes between Iopcc, Iopg of 6 months(13.61±1.96,9.32±2.07)mmHg and that of 3 months after LASIK. CRF and CH of 3 months after LASIK(6.36±1.45,7.71±1.30)mmHg were significantly changed comparing with preoperative's(9.84±1.99,9.77±1.56)mmHg(<i>t</i>=-24.116, -19.171; <i>P</i>=0.000, 0.000). The difference was(3.49±1.97, 2.06±1.47)mmHg. There were no statistical differences between 6 months(6.24±1.38, 7.67±1.25)mmHg and 3 months(<i>t</i>=1.456, 0.636; <i>P</i>=0.147, 0.525).<p>CONCLUSION: The corneal biomechanical properties after FS- LASIK are lower than that of preoperative. Corneal biomechanics sustains steadily about 3 months after LASIK. |
topic |
femtosecond laser corneal thickness corneal biomechanics |
url |
http://www.ies.net.cn/cn_publish/2013/12/201312060.pdf |
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