| Standards for Medial Canthal, Lateral Canthal and Interpupillary Distances of Korean Children
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Dong Hwan Lee |
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Dept, of Pediatrics, College of Medicine,Seoul National University |
| 韓國 小兒의 內眥, 外眥 및 瞳孔間 距離의 標準値 |
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李東換 |
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서울大學校 醫科大學 小兒科學敎室 |
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| Abstract |
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Because of racial differences in the shape and proportions of the skull, orbital distance and amount of the soft tissues about the eyes, patients should be compared with their own racial norms of interpupillary and canthal distances in diagnosis of hypertelorism or hypotelorism. However normal vaules have not been published yet in Korea. Measurements of 1535 Korean children (Male 756； Female 779) yielded data for mean ±2 S.D.
of medial and lateral canthal distances and interpupillary distance. (Table 1 & 2, Fig. 2 & 3) By this data, lateral displacement of medial canthus can be diagnosed in a Korean patient whose medial canthal distance is atove 2.7 cm in newborn and above 4. 0 cm in school age. Hypertelorism can be diagnosed in a patient whose interpupillary distance is above 4. 6 cm in newborn and above 6.6 cm in school age. (Fig. 2 & 3) Separate plotting of the three values for males and females showed no apparent difference. (Fig. 4) Korean children had uniformly wider medial canthal distance by 5 mm compared with American children reported by Pryor. Interpupillary and lateral canthal distances of Korean children were wider by l~5mm than American children. (Fig. 5 & 6) An application of theses normal values should help the clinician in judging ocular hypertelorism and hypotelorism.
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