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目的通过比较VEP验光、电脑验光及主觉插片验光在检测外伤眼屈光度中的关系,探讨VEP验光方法在外伤眼矫正视力中的应用价值。方法本组实验选取各种类型眼外伤患者,伤后3～6月经检查存在视力下降者61人(受检眼61只),分别对伤眼行电脑验光、主觉播片验光及VEP验光,比较三种验光方法所测屈光度及矫正视力之间的差异性。结果经统计学处理,VEP验光与主觉插片验光所测伤眼屈光度和矫正视力无显著性差异(P>0.05);电脑验光与主觉验光、VEP验光在球镜屈光度检查上存在显著性差异(P<0.05),在散光检查方面无明显差异(P>0.05);电脑验光所得矫正视力与主觉插片验光、VEP验光所得结果之间均存在显著性差异(P<0.05),尤其在角膜、虹膜睫状体、晶状体、玻璃体等部位损伤的受检眼中差异更为显著(P<0.01)。结论电脑验光和VEP验光均是客观的屈光检查方法,前者有方便迅速的优点,但其结果存在较大误差,特别是在屈光系统损伤的患者中误差更大,仅可作为屈光矫正的初步检查依据;而后者验光结果准确,能够反映伤眼的屈光实际情况,可以应用于法医学鉴定中的伤眼最佳矫正视力的评定。
Objective To compare the relationship between VEP refraction, computer optometry and main optometry in detecting dioptric power of traumatic eyes, and to explore the value of VEP optometry in correcting visual acuity of traumatic eyes. Methods The group of patients with various types of ocular trauma were selected in this study. 61 eyes (61 eyes) were examined for visual acuity after 3-6 months after injury. The computerized optometry, The differences between the refraction measured by the three optometry methods and the corrected visual acuity were compared. Results There was no significant difference (P> 0.05) between the visual acuity of VEP and the corrected visual acuity measured by VEP and main optometry (P <0.05). There was no significant difference in astigmatism (P> 0.05). There was a significant difference (P <0.05) between the corrected visual acuity of computer optometry and the results of VEP optometry In the cornea, iris and ciliary body, lens, vitreous and other parts of the lesion in the affected eye more significantly (P <0.01). Conclusions Both computer optometry and VEP optometry are objective methods of refractive examination. The former has the advantages of convenience and speediness. However, there is a big error in the results. Especially in patients with refractive system injury, the error is larger and can only be used as refractive correction Of the initial inspection basis; the latter with accurate optometry results, reflecting the actual situation of refractive eye injuries, can be applied forensic identification of injured eyes best corrected visual acuity assessment.