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目的 探讨小儿内眦指数的正常值及内眦指数对小儿某些智力低下疾病的诊断价值。方法 测量 0～ 12岁正常儿 36 0例和 6月～ 6岁智力障碍患儿 5 2例的头围、内眦距、外眦距 ,用内眦距 /外眦距得出内眦指数Ⅰ。用内眦距 /头围得出内眦指数Ⅱ。各组参数进行统计学分析。结果 正常儿内眦指数Ⅰ 0 .34± 0 .0 3,内眦指数Ⅱ 0 .0 6 8± 0 .0 0 8;2 1-三体综合征内眦指数Ⅰ 0 .5 1± 0 .0 2 ,内眦指数Ⅱ 0 .0 91± 0 .0 0 4,与正常儿比较差异非常显著 (P <0 .0 1) ,克汀病内眦指数Ⅰ 0 .48± 0 .0 4,差异非常显著 (P <0 .0 1) ;内眦指数Ⅱ 0 .0 96± 0 .0 0 7,差异显著 (P <0 .0 5 ) ;脑发育不全内眦指数Ⅰ 0 .5 1± 0 .0 7,差异显著 (P <0 .0 5 ) ;内眦指数Ⅱ 0 .0 89± 0 .0 0 8,差异不显著 (P >0 .0 5 ) ;脑病及颅内出血后遗症内眦指数Ⅰ 0 .38± 0 .0 6 ,内眦指数Ⅱ 0 .0 6 4± 0 .0 0 4,差异不显著 (P >0 .0 5 )。结论 内眦指数Ⅰ和内眦指数Ⅱ既可反映内眦距离又不受年龄影响 ,尤以指数Ⅰ更具临床实用价值。
Objective To investigate the diagnostic value of pediatric internal 眦 index normal value and internal 眦 index in some children with mental retardation. Methods The head circumference, internal fossa distance and external fossa distance of 36 children with mental retardation between 0 to 12 years old and 52 children with mental retardation from June to 6 years old were measured, and the internal fossa index Ⅰ . The inner 眦 distance / head Wai draws the 眦 index II. The parameters of each group were statistically analyzed. Results The normal infantile index Ⅰ 0 .34 ± 0 .0 3, the internal index Ⅱ 0 .0 6 8 ± 0. 0 8; 2 1 trisomy syndrome index 0 I 0 .5 1 ± 0. (P <0.01), and the internal crest index Ⅱ 0 .0 91 ± 0. 0 0 4 was significantly different from that of the normal children (P <0.01). The cretinism index was 0.48 ± 0.04, The difference was significant (P <0.01); the internal 眦 index was 2.096 ± 0.07, the difference was significant (P <0.05); the brain hypoplasia index 0 0.51 ± 0 .0 7, the difference was significant (P <0. 05); the internal 眦 index was 2.089 ± 0.080, the difference was not significant (P> 0.05); encephalopathy and intracranial hemorrhage sequelae The index Ⅰ 0 .38 ± 0 .0 6, the internal index Ⅱ 0 .0 6 4 ± 0. 0 0 4, the difference was not significant (P> 0.05). Conclusions The index of internal 眦 Ⅰ and the index 内 of internal 既 both reflect the distance of internal 眦 and not affected by age, especially index Ⅰ has clinical value.