本研究的目的是建立水平可见虹膜直径(HVID)的规范数据,垂直可见虹膜直径(VVID),和一组南印度儿童的睑裂高度(PFH)。这项研究包括来自泰米尔纳德邦不同地区六所学校的1,234名儿童,印度。HVID,VVID,PFH是由三名验光师使用简单的毫米直尺测量的。根据他们的年龄,这些孩子被分为三组:学龄前儿童(4-5岁),小学生(6-10岁),和高中生(11-15岁)。平均年龄4.49±0.50岁,8.00±1.41年,三组分别为12.87±1.42岁,分别。平均HVID为10.45mm,10.54mm,10.73毫米,分别。平均VVID为9.18毫米,9.32mm,和9.57毫米,分别。同样,平均PFH为8.15mm,8.30mm,和8.52毫米,分别。HVID有显著差异,VVID,和PFH在三个年龄组(P≤0.001),以及6-10岁年龄组的男性和女性儿童(P≤0.05),但其他组没有。组内相关系数值(0.78-0.95)在所有参数的三名验光师之间显示出良好的一致性。HVID的正常范围,VVID,目前的研究中提出的PFH可以帮助医生诊断角膜疾病,作为隐形眼镜设计的基础,并为南印度儿童提供精确的人工晶状体屈光力计算。
The purpose of this study was to establish the normative data of horizontal visible
iris diameter (HVID), vertical visible
iris diameter (VVID), and palpebral fissure height (PFH) in a cohort of South Indian children. The study included 1,234 children from six schools of different regions of Tamil Nadu state, India. HVID, VVID, and PFH were measured using a simple millimeter ruler by three optometrists. Based on their age, the children were divided into three groups: preprimary school children (4-5 years), primary school children (6-10 years), and high school children (11-15 years). Mean age was 4.49 ± 0.50 years, 8.00 ± 1.41 years, and 12.87 ± 1.42 years in the three groups, respectively. Mean HVID was 10.45 mm, 10.54 mm, and 10.73 mm, respectively. Mean VVID was 9.18 mm, 9.32 mm, and 9.57 mm, respectively. Similarly, mean PFH was 8.15 mm, 8.30 mm, and 8.52 mm, respectively. There was a significant difference in HVID, VVID, and PFH among the three age groups (P ≤ 0.001), as well as among male and female children in the 6-10 years age group (P ≤ 0.05) but not in the other groups. Intraclass correlation coefficient values (0.78-0.95) show good agreement among the three optometrists for all parameters. The normal range of HVID, VVID, and PFH presented in the current study can help practitioners in the diagnosis of corneal disorders, serve as a basis for the design of contact lenses, and enable accurate intraocular lens power calculations for South Indian children.