Objective To investigate the visual acuity development of preschoolers aged 3 to 5 in Yantai rural areas. Mehtods Eight kindergardens were randomly selected from different districts in the Yantai rural areas. Visual acuity of preschoolers was measured with Log MAR vision chart. Results 1 376 normal preschool children were examined in the study. There were 145 boys and 130 girls in the 3 - year - old group and 268/262, 286/285 in the 4 - and 5 - year - old groups, respectively. The visual acuities on the Log MAR scale for the corresponding age groups were ( 0. 25 ±0. 09 ), (0. 20 ±0. 10 ) and ( 0. 13 ±0. 10 ), respectively. The difference among the three groups was statistically significant ( P <0. 01 ). The difference between any two groups was also statistically significant ( P < 0. 01 ). However, the difference between boys and girls in any groups was not statistically significant ( P >0. 05 ). Conclusion The visual acuity shows a slow rise with an increase of age a-mong the 3 ~5 years old preschollers, which indicates criteria for amblyopia based on age difference. No correlation between visual acuity and gender was found.%目的 了解烟台地区城乡结合部3～5岁学龄前儿童的视力发育情况.方法 随机选取烟台市芝罘区幸福社区及栖霞(县)市城乡结合部3～5岁学龄前儿童进行视力调查.结果 共有1 376名儿童完成检查,其中,3 岁组男145名,女130名;4 岁组男268名,女262名;5 岁组男286名,女285名.3岁组、4岁组及 5岁组的Log MAR视力分别为(0.25±0.09)、(0.20±0.10)、(0.13 ±0.10),3组视力比较,差异有统计学意义(P＜0.01);其中两两比较差异均有统计学意义(P＜0.01).3岁组男女平均视力分别为(0.25±0.09)、(0.25±0.09);4岁组男女平均视力分别为(0.20±0.10)、(0.20±0.10);5岁组男女平均视力分别为(0.12±0.10)、(0.13±0.10).3组内不同性别间视力比较,差异均无统计学意义(P＞0.05).结论 城乡结合部3～5岁学龄前儿童视力随年龄增长逐渐提高,儿童视力发育与性别无关.
展开▼
