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Clinical Study of IOL Master for Measurements of Axial Length and Corneal Curvature before and after Removal of Silicone Oil

Author: XiaoJing
Tutor: MaXiang
School: Dalian Medical University
Course: Ophthalmology
Keywords: IOL Master Axial Curvature of the cornea Silicone oil
CLC: R779.6
Type: Master's thesis
Year: 2010
Downloads: 76
Quote: 0
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Abstract


Objective: To compare silicone oil removal before and after surgery IOL Master and other commonly used clinical instrument accuracy of axial length and corneal curvature measurement , to investigate its clinical characteristics . Methods : analysis of 34 cases cataract extraction plus vitrectomy combined with silicone oil tamponade in patients with axial length measurements using the IOL Master and A , respectively, before and after silicone oil removal , the IOL Master corneal curvature measuring the curvature of the cornea . Results : 1.IOL Master measurement silicone oil removal preoperative axial length was 24.18 ± 2.11 mm and postoperative axial length was 24.12 ± 1.98mm , A ultra measurement silicone oil remove preoperative axial length was 32.77 ± 3.41 mm axial growth after 24.33 ± 2.03mm. The measuring results of the IOL Master axial length before and after surgery the difference was not statistically significant ( P = 0.369 ) A super- axial length measurements before and after surgery , a significant difference ( P lt; 0.01 ) ; preoperative two instruments the measurement results are significant differences (P lt; 0.01), and the measurement results of the two instruments after the difference was not statistically significant ( P = 0.062) . 2.IOLMaster measurement silicone oil removal preoperative corneal curvature of 42.81 ± 2.41 D, corneal curvature to 42.89 ± 2.32D ; keratometer measured pre-operative corneal curvature was 42.46 ± 2.13D , corneal curvature was 42.55 ± 2.12D . The IOL Master keratometer There was no statistically significant difference in corneal curvature measurements before and after silicone oil removal . Silicone oil removal preoperative the IOL Master keratometer measurements mean difference -0.35D ( keratometer -IOL Mastr ) , the 95 % limits of agreement for -2.49 to 1.79D ; poor results after silicone oil removal both measurement the value of the mean -0.34D ( keratometer -IOL Mastr ) , the 95 % limits of agreement for -2.37 to 1.69D . Conclusion : For silicone oil removal before and after the axial length measurement the IOL Master 's accuracy is higher than supine contact A ??super : For the measurement of the curvature of the cornea , IOL Master more accurate than keratometer .

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CLC: > Medicine, health > Ophthalmology > Eye surgery and surgery
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