论文部分内容阅读
目的探讨弱视儿童不同屈光度的眼轴、角膜屈折力和视觉诱发电位变化与弱视程度的关系。方法对65例远视性弱视儿童和26例正常儿童的眼轴长度、角膜屈折力和视觉诱发电位的检测,分别对弱视儿童与正常儿童,以及弱视儿童中不同程度远视的检测结果进行分析。结果弱视组眼轴(21.09±1.33)较正常组眼轴(22.62±0.71)短,其差异有高度显著性,不同屈光度3组之间眼轴的差异均有高度显著性意义。弱视组垂直径角膜屈折力较正常组的差异有显著性,而不同屈光度组之间角膜屈折力无明显差异。在P-VEP的检测中,弱视组N75和P100振幅较正常组降低,其差异均有高度显著性(P<0.001),弱视程度也随远视屈光度的增加而加重,3组之间弱视程度的差异有高度显著性意义。结论P-VEP的变化,尤其P100振幅下降的程度与弱视眼的屈光度有密切关系,同时证实P100振幅可反映视功能状况,是检测弱视儿童视功能的有效方法之一。
Objective To investigate the relationship between the changes of axial and corneal refractive power and visual evoked potentials and the degree of amblyopia under different diopters in children with amblyopia. Methods The axial length, corneal refractive power and visual evoked potentials were measured in 65 children with presbyopic amblyopia and 26 normal children. The results of presbyopic children with presbyopia and children with presbyopia were analyzed. Results The axial length (21.09 ± 1.33) in the amblyopic group was shorter than that in the normal group (22.62 ± 0.71). The difference was highly significant. The axial differences between the three groups were highly significant. The difference of vertical corneal refractive power in amblyopic group compared with normal group was significant, but there was no significant difference between different refractive groups. In the detection of P-VEP, the amplitudes of N75 and P100 in the amblyopic group were significantly lower than those in the normal group (P <0.001), and the degree of amblyopia was also aggravated with the increase of farsightedness. The degree of amblyopia The difference is highly significant. Conclusions The change of P-VEP, especially the amplitude of P100 amplitude is closely related to the refractive power of amblyopic eyes. It is also confirmed that the amplitude of P100 can reflect the status of visual function, which is one of the effective methods to detect the visual function of amblyopic children.