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目的：了解南京地区2~6岁儿童屈光度、视力、立体视功能及眼压正常参考值范围，为该年龄段儿童视功能的筛查标准制订提供依据。方法采用横断面现况调查，选取南京市2个区，每区抽取2所幼儿园24-83个月儿童共877例1754眼为调查对象，对其视力、屈光、眼压、立体视、眼位及眼球运动等全面检查。结果有效病例817例1634只眼的球镜值、散光值为偏态分布，等效球镜值为正态分布。球镜度数偏离超出+0.50D~+3.00D，散光度数偏离超出+2.0D为2~6岁年龄段儿童屈光筛查异常的判断标准。3~6岁眼压正常值范围为10~22mmHg。3~6岁年龄段视力均值：3岁0.6、4岁0.7、5~6岁0.8；3~4岁视力低于0.4，4~6岁视力低于0.5，3~6岁儿童Titmus＞160″可作为异常值界值。结论儿童视功能正常值参考范围区别于成人，对屈光度和视力检查的正常参考值要充分考虑年龄的因素。“,”Objective To understand the range of refractive,visual acuity, stereo vision and intraocular pressure in children aged 2~6 years in Nanjing region, and provide a basis for the screening criteria for the visual function of children in this age group. Methods A cross-sectional prevalence survery was used to select 2 districts in Nanjing City,each drawn 2 kindergartens for children 24~83 months of 1754 eyes 877 cases for the survey,check their vision, refraction, intraocular pressure, stereopsis,eye position and eye movement. Results The spherical and astigmatism are the partial distribution,the spherical equivalent value is normal distribution in 817 cases of 1634 eyes. Spherical degree deviation exceeds +0.50D~+3.00D,astigmatisms deviate beyond+2.00D for 2~6 years of age are abnormal range of refractive screening. 3~6 years old nor-mal range of intraocular pressure was 10~22mmHg. The average value of vision in 3~6 age group:3years0.6,4 years0.7,5~6years 0.8. Vision less than 0.4 in 3~4 years old and below 0.5 in 4~6years old is abnormal. Titmus>160"can be used as a boundary value. Conclusions The visual function of the reference range for children is different from adults,the factor of age should be fully considered about the normal values of the refractive index and visiual acuity.