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目的 :了解不同程度度高度近视眼的视觉电生理改变。方法 :将 12 4只高度近视眼按不同的屈光度分成 3组 (简称高近组 ) ,对此 3组以及 110只正常眼对照组采用美国LKCUTAS E30 0 0型视觉电生理仪检查FERG及PVEP。结果 :高近Ⅰ、Ⅱ、Ⅲ组ERG闪烁光的峰时值分别为 (2 8 74± 3 17)ms、(32 30± 10 71)ms、(31 0 3± 2 4 6 )ms ,均较对照组峰时值 (2 8 30± 2 16 )ms延长 ,差异有显著性 (P <0 0 5 ) ;高近Ⅰ、Ⅱ、Ⅲ组ERG闪烁光的振幅分别为 (6 4 13± 2 2 96 )mv、(4 8 6 0± 2 4 30 )mv、(39 75± 10 10 )mv ,均较对照组振幅 (83 70± 33 18)mv降低 ,差异有显著性 (P <0 0 5 )。高近Ⅰ组ERG最大反应a、b波振幅为 (194 4 6± 6 6 6 5 )mv、(4 15 4 0± 130 4 0 )mv ,高于高近Ⅱ组 (14 7 19± 6 9 99)mv、(32 7 0 0± 97 5 4 )mv ,差异有非常显著性 (P <0 0 1) ,高近Ⅱ组ERG最大反应a、b波振幅高于高近Ⅲ组 (12 0 80± 32 73)mv、(30 2 5 0± 4 3 89)mv ,差异有显著性 (P<0 0 5 )。高近 3个组a波振幅的下降程度较b波明显 ,b/a比值 >2 0。高近Ⅱ组的VEP振幅较对照组下降 ,有非常显著性差异 (P <0 0 1)。高近 3个组的眼轴较对照组长 ,有非常显著性差异 (P <0 0 1)。高近Ⅰ组的角膜曲率?
Objective: To understand the different degree of high degree of myopia visual electrophysiological changes. Methods: 12 4 high myopia were divided into 3 groups according to different diopters. The 3 groups and 110 normal control eyes were examined by the American LKCUTAS E30 0 0 visual electrophysiology instrument for FERG and PVEP. Results: The peak values of ERG scintigraphy in high group Ⅰ, Ⅱ and Ⅲ were (2 8 74 ± 3 17) ms, (32 30 ± 10 71) ms and (31 0 3 ± 2 46) ms respectively The amplitude of ERG scintigraphy in high-level group Ⅰ, Ⅱ and Ⅲ was (6 4 13 ± 2) h, respectively, which was significantly higher than that in control group (2 8 30 ± 2 16 ms) (96 ± 10) mv and (96 ± 10 10) mv respectively compared with the control group (83 70 ± 33 18 mv), the difference was significant (P <0 0) 5). The amplitudes of a, b wave of ERG maximal response in high-group Ⅰ group were (194 4 6 ± 6 6 6 5) mv, (4 15 4 0 ± 130 4 0) mv, which were higher than those in high-close group Ⅱ (14 7 19 ± 6 9 (P <0.01). The amplitude of a, b wave of ERG maximal response in high-close group Ⅱ was higher than that in high-close group Ⅲ (P0.01) 80 ± 32 73) mv, (30 2 5 0 ± 4 3 89) mv, the difference was significant (P <0 05). The magnitude of a-wave amplitude decrease is higher than that of b-wave in the near three groups, and the b / a ratio is> 20. There was a significant difference in VEP amplitude between high-close group and control group (P <0.01). The axial length of the top three groups was significantly longer than that of the control group (P <0.01). High near the corneal curvature of group Ⅰ?