Kappa angles in different positions in patients with myopia during LASIK
AIM： To investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis（LASIK）.·METHODS： A retrospective study was performed on395 eyes from 215 patients with myopia that received LASIK. Low, moderate, and high myopia groups were assigned a...
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| Veröffentlicht in: | International journal of ophthalmology Jg. 9; H. 4; S. 585 - 589 |
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International Journal of Ophthalmology Press
18.04.2016
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| Abstract | AIM： To investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis（LASIK）.·METHODS： A retrospective study was performed on395 eyes from 215 patients with myopia that received LASIK. Low, moderate, and high myopia groups were assigned according to diopters. The horizontal and vertical components of kappa angle in sitting position were measured before the operation, and in supine position during the operation. The data from the two positions were compared and the relationship between kappa angle and diopters were analyzed.· RESULTS： Two hundred and twenty-three eyes（56.5%） in sitting position and 343 eyes（86.8%） in supine position had positive kappa angles. There were no significant differences in horizontal and vertical components of kappa angle in the sitting position or horizontal components of kappa angle in the supine position between the three groups（P 〉0.05）. A significant difference in the vertical components of kappa angle in the supine position was seen in the three groups（P 〈0.01）. Differences in both horizontal and vertical components of kappa angles were significant between the sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angles（P 〈0.05） were found and vertical components of kappa angle in sitting and supine positions were negatively correlated with the degree of myopia（sitting position： r =-0.109; supine position： r =-0.172; P 〈0.05）.·CONCLUSION： There is a correlation in horizontal and vertical components of kappa angle in sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angle in sitting and supine positions till the end of the results. This result still needs further observation. Clinicians should take into account different postures when excimer laser surgery needs to be performed. |
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| AbstractList | AIM: To investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis (LASIK). METHODS: A retrospective study was performed on 395 eyes from 215 patients with myopia that received LASIK. Low, moderate, and high myopia groups were assigned according to diopters. The horizontal and vertical components of kappa angle in sitting position were measured before the operation, and in supine position during the operation. The data from the two positions were compared and the relationship between kappa angle and diopters were analyzed. RESULTS: Two hundred and twenty-three eyes (56.5%) in sitting position and 343 eyes (86.8%) in supine position had positive kappa angles. There were no significant differences in horizontal and vertical components of kappa angle in the sitting position or horizontal components of kappa angle in the supine position between the three groups (P>0.05). A significant difference in the vertical components of kappa angle in the supine position was seen in the three groups (P<0.01). Differences in both horizontal and vertical components of kappa angles were significant between the sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angles (P<0.05) were found and vertical components of kappa angle in sitting and supine positions were negatively correlated with the degree of myopia (sitting position: r=-0.109; supine position: r=-0.172; P<0.05). CONCLUSION: There is a correlation in horizontal and vertical components of kappa angle in sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angle in sitting and supine positions till the end of the results. This result still needs further observation. Clinicians should take into account different postures when excimer laser surgery needs to be performed. AIMTo investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis (LASIK).METHODSA retrospective study was performed on 395 eyes from 215 patients with myopia that received LASIK. Low, moderate, and high myopia groups were assigned according to diopters. The horizontal and vertical components of kappa angle in sitting position were measured before the operation, and in supine position during the operation. The data from the two positions were compared and the relationship between kappa angle and diopters were analyzed.RESULTSTwo hundred and twenty-three eyes (56.5%) in sitting position and 343 eyes (86.8%) in supine position had positive kappa angles. There were no significant differences in horizontal and vertical components of kappa angle in the sitting position or horizontal components of kappa angle in the supine position between the three groups (P>0.05). A significant difference in the vertical components of kappa angle in the supine position was seen in the three groups (P<0.01). Differences in both horizontal and vertical components of kappa angles were significant between the sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angles (P<0.05) were found and vertical components of kappa angle in sitting and supine positions were negatively correlated with the degree of myopia (sitting position: r=-0.109; supine position: r=-0.172; P<0.05).CONCLUSIONThere is a correlation in horizontal and vertical components of kappa angle in sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angle in sitting and supine positions till the end of the results. This result still needs further observation. Clinicians should take into account different postures when excimer laser surgery needs to be performed. To investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis (LASIK). A retrospective study was performed on 395 eyes from 215 patients with myopia that received LASIK. Low, moderate, and high myopia groups were assigned according to diopters. The horizontal and vertical components of kappa angle in sitting position were measured before the operation, and in supine position during the operation. The data from the two positions were compared and the relationship between kappa angle and diopters were analyzed. Two hundred and twenty-three eyes (56.5%) in sitting position and 343 eyes (86.8%) in supine position had positive kappa angles. There were no significant differences in horizontal and vertical components of kappa angle in the sitting position or horizontal components of kappa angle in the supine position between the three groups (P>0.05). A significant difference in the vertical components of kappa angle in the supine position was seen in the three groups (P<0.01). Differences in both horizontal and vertical components of kappa angles were significant between the sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angles (P<0.05) were found and vertical components of kappa angle in sitting and supine positions were negatively correlated with the degree of myopia (sitting position: r=-0.109; supine position: r=-0.172; P<0.05). There is a correlation in horizontal and vertical components of kappa angle in sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angle in sitting and supine positions till the end of the results. This result still needs further observation. Clinicians should take into account different postures when excimer laser surgery needs to be performed. AIM： To investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis（LASIK）.·METHODS： A retrospective study was performed on395 eyes from 215 patients with myopia that received LASIK. Low, moderate, and high myopia groups were assigned according to diopters. The horizontal and vertical components of kappa angle in sitting position were measured before the operation, and in supine position during the operation. The data from the two positions were compared and the relationship between kappa angle and diopters were analyzed.· RESULTS： Two hundred and twenty-three eyes（56.5%） in sitting position and 343 eyes（86.8%） in supine position had positive kappa angles. There were no significant differences in horizontal and vertical components of kappa angle in the sitting position or horizontal components of kappa angle in the supine position between the three groups（P 〉0.05）. A significant difference in the vertical components of kappa angle in the supine position was seen in the three groups（P 〈0.01）. Differences in both horizontal and vertical components of kappa angles were significant between the sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angles（P 〈0.05） were found and vertical components of kappa angle in sitting and supine positions were negatively correlated with the degree of myopia（sitting position： r =-0.109; supine position： r =-0.172; P 〈0.05）.·CONCLUSION： There is a correlation in horizontal and vertical components of kappa angle in sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angle in sitting and supine positions till the end of the results. This result still needs further observation. Clinicians should take into account different postures when excimer laser surgery needs to be performed. |
| Author | Hui Qi Jing-Jing Jiang Yan-Ming Jiang Li-Qiang Wang Yi-Fei Huang |
| AuthorAffiliation | Department of Ophthalmology, Chinese PLA GeneralHospital, Beijing 100853, China Department of Ophthalmology, Bethune International PeaceHospital ofPLA, Shijiazhuang 50082, Hebei Province, China Department of Ophthalmology, Beijing Children＇s Hospital,Capital Medical University, Beijing 100045, China |
| AuthorAffiliation_xml | – name: 1 Department of Ophthalmology, Chinese PLA General Hospital, Beijing 100853, China – name: 2 Department of Ophthalmology, Bethune International Peace Hospital of PLA, Shijiazhuang 50082, Hebei Province, China – name: 3 Department of Ophthalmology, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China |
| Author_xml | – sequence: 1 givenname: Hui surname: Qi fullname: Qi, Hui organization: Department of Ophthalmology, Chinese PLA General Hospital, Beijing 100853, China; Department of Ophthalmology, Bethune International Peace Hospital of PLA, Shijiazhuang 50082, Hebei Province, China – sequence: 2 givenname: Jing-Jing surname: Jiang fullname: Jiang, Jing-Jing organization: Department of Ophthalmology, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China – sequence: 3 givenname: Yan-Ming surname: Jiang fullname: Jiang, Yan-Ming organization: Department of Ophthalmology, Chinese PLA General Hospital, Beijing 100853, China – sequence: 4 givenname: Li-Qiang surname: Wang fullname: Wang, Li-Qiang organization: Department of Ophthalmology, Chinese PLA General Hospital, Beijing 100853, China – sequence: 5 givenname: Yi-Fei surname: Huang fullname: Huang, Yi-Fei organization: Department of Ophthalmology, Chinese PLA General Hospital, Beijing 100853, China |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/27162734$$D View this record in MEDLINE/PubMed |
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| Notes | kappa angle myopia keratomileusis laser in situ supine position AIM： To investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis（LASIK）.·METHODS： A retrospective study was performed on395 eyes from 215 patients with myopia that received LASIK. Low, moderate, and high myopia groups were assigned according to diopters. The horizontal and vertical components of kappa angle in sitting position were measured before the operation, and in supine position during the operation. The data from the two positions were compared and the relationship between kappa angle and diopters were analyzed.· RESULTS： Two hundred and twenty-three eyes（56.5%） in sitting position and 343 eyes（86.8%） in supine position had positive kappa angles. There were no significant differences in horizontal and vertical components of kappa angle in the sitting position or horizontal components of kappa angle in the supine position between the three groups（P 〉0.05）. A significant difference in the vertical components of kappa angle in the supine position was seen in the three groups（P 〈0.01）. Differences in both horizontal and vertical components of kappa angles were significant between the sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angles（P 〈0.05） were found and vertical components of kappa angle in sitting and supine positions were negatively correlated with the degree of myopia（sitting position： r =-0.109; supine position： r =-0.172; P 〈0.05）.·CONCLUSION： There is a correlation in horizontal and vertical components of kappa angle in sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angle in sitting and supine positions till the end of the results. This result still needs further observation. Clinicians should take into account different postures when excimer laser surgery needs to be performed. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
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| References_xml | – reference: 21241926 - J Cataract Refract Surg. 2011 Feb;37(2):392-408 – reference: 16263370 - Surv Ophthalmol. 2005 Nov-Dec;50(6):549-87 – reference: 15724685 - J Refract Surg. 2005 Jan-Feb;21(1):52-8 – reference: 15177605 - J Cataract Refract Surg. 2004 Jun;30(6):1281-6 – reference: 18361975 - J Cataract Refract Surg. 2008 Apr;34(4):557-61 – reference: 22569467 - Curr Opin Ophthalmol. 2012 Jul;23(4):269-75 – reference: 21726847 - Am J Ophthalmol. 2011 Oct;152(4):591-599.e2 – reference: 20128530 - J Refract Surg. 2010 Dec;26(12):966-71 – reference: 18812124 - J Cataract Refract Surg. 2008 Oct;34(10):1720-6 – reference: 22791969 - Clin Ophthalmol. 2012;6:895-901 – reference: 18058355 - Strabismus. 2007 Oct-Dec;15(4):193-6 – reference: 17523505 - J Refract Surg. 2007 May;23(5):456-60 – reference: 11255046 - J Cataract Refract Surg. 2001 Mar;27(3):362-9 – reference: 7124896 - Am J Optom Physiol Opt. 1982 Jul;59(7):568-72 – reference: 18041245 - J Refract Surg. 2007 Nov;23(9):911-5 – reference: 16722485 - J Refract Surg. 2006 May;22(5):467-71 – reference: 21681216 - Eye (Lond). 2011 Sep;25(9):1187-93 – reference: 19248536 - J Refract Surg. 2009 Jan;25(1 Suppl):S98-103 – reference: 23568141 - Int Ophthalmol. 2014 Feb;34(1):15-8 – reference: 11780199 - Chin Med J (Engl). 2001 Feb;114(2):167-9 – reference: 24379548 - Oman J Ophthalmol. 2013 Sep;6(3):151-8 – reference: 23786377 - Clin Exp Optom. 2014 Jan;97(1):18-29 |
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| Snippet | AIM： To investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis（LASIK）.·METHODS： A... To investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis (LASIK). A retrospective study... AIMTo investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis (LASIK).METHODSA... AIM: To investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis (LASIK). METHODS: A... |
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| Title | Kappa angles in different positions in patients with myopia during LASIK |
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