Shape and Thickness of Tarsal Plate in Asians

초록

Tarsal plates were semilunar shaped and classified into 3 types: symmetric, medially skewed, and laterally skewed. For the upper eyelids, the laterally skewed type was the most frequent (42, 77.8%), followed by the medially skewed (8, 14.9%) and symmetric (4, 7.4%). For the lower eyelids, the laterally skewed type (20, 36.7%), the medially skewed (18, 33.3%) and symmetric type (16, 30.0%) had similar ratios. The vertical height of the upper tarsal plate was greatest at the central point (9.3±0.9mm), followed by the lateral point (7.1±1.0mm) and the medial point (6.2±0.8mm). The height of the lower tarsal plate was also greatest at the central point (4.6±0.6mm) followed by the medial point (3.9±0.5mm) and the lateral point (3.8±0.5mm). In our previous study, the widths of the tarsal plate at its lower border, mid-height, and upper border were 21.8±1.8, 16.2±1.6, and 8.3±1.0mm, respectively. 1 combining this study with our previous study, the upper tarsal plate is D-shaped, with its base and height ratio at 7:3(21.8mm/9.3mm=2.344).