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KMID : 0367419780190010040
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Journal of Korean Pediatric Society
1978 Volume.19 No. 1 p.40 ~ p.47
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Standards for Medial Canthal, Lateral Canthal and Interpupillary Distances of Korean Children
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Abstract
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Because of racial differences in the shape and proportions of the skull, orbital distance and amolint of the soft tissues about the eves, patients should be compared with their own racial norms of interpupillary and canthal distances in diagnosis of hypertelorism or hvpotelorism. However normal vaules have not been published yet in Korea.
Measurements of 1535 Korean children (Male 756; Female 779) yielded data for mean S.D. of medial and lateral canthal distances and interpupillary distance. (Table 1 & $ Fig. 2 & 3)
By this data, lateral displacement of medial canthus can be diagnosed in a Korean patient whose medial canthal distance is above 2.7 cm in newbo*n 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 1^-5 mm than American children. (Fig. 5 & 6)
An application of theses normal values should help the clinician in judging ocular hypertelorsm and hypotelorism.
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