Takahagi Rodrigo U, Schellini Silvana A, Padovani Carlos R, Ideta Shinji, Katori Nobutada, Nakamura Yasuhisa
Department of Ophthalmology, Faculdade de Medicina de Botucatu, Botucatu, Sao Paulo State, Brazil.
Clin Ophthalmol. 2008 Sep;2(3):563-7. doi: 10.2147/opth.s1703.
Quantitative evaluation of palpebral dimensions of Japanese residents in Japan and Japanese descendant (Nikkeis) who live in Brazil, in order to define if environmental factors may influence these parameters.
A prospective study evaluating 107 Nikkeis from Brazil and 114 Japanese residents in Japan, aged 20 years or older. Exclusion criteria were those with palpebral position alterations, prior palpebral surgery, and crossbreeding. Images were obtained with a digital camera, 30 cm from the frontal plane at pupil height, with the individual in a primary position and the eye trained on the camera lens. Images were transferred to computer and processed by the Scion Image program. Measurements were made of distance between medial canthi, distance between pupils (IPD), superior eyelid crease position, distance between the superior lid margin and corneal reflexes (MRD), horizontal width, height, area, and obliquity of the palpebral fissure. Data were analyzed using analysis of variance for a three factor model and respective multiple comparison tests.
Japanese residents and Nikkeis living in Brazil have similar measurements. Statistical differences were found for some age groups concerning distance between pupils, horizontal, and vertical fissures, palpebral fissure area, and obliquity with native Japanese presenting discretely higher measurements than Nikkeis.
Environmental factors do not affect palpebral dimensions of Nikkeis living in Brazil.
对居住在日本的日本居民以及居住在巴西的日裔（日系巴西人）的睑裂尺寸进行定量评估，以确定环境因素是否会影响这些参数。
一项前瞻性研究，评估了107名来自巴西的日系巴西人和114名居住在日本的20岁及以上的日本居民。排除标准为有睑裂位置改变、既往睑裂手术史以及混血者。使用数码相机在瞳孔高度处距额平面30厘米处获取图像，受试者处于初始位置，眼睛注视相机镜头。图像被传输到计算机并通过Scion Image程序进行处理。测量指标包括内眦间距、瞳孔间距（IPD）、上睑皱襞位置、上睑缘与角膜反射之间的距离（MRD）、睑裂的水平宽度、高度、面积和倾斜度。使用三因素模型的方差分析和相应的多重比较检验对数据进行分析。
居住在巴西的日本居民和日系巴西人的测量结果相似。在某些年龄组中，发现瞳孔间距、水平和垂直睑裂、睑裂面积以及倾斜度存在统计学差异，日本本土居民的测量值略高于日系巴西人。
环境因素不会影响居住在巴西的日系巴西人的睑裂尺寸。
