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KMID : 1011420090140040071
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Journal of Korean Ophthalmic Optics Society
2009 Volume.14 No. 4 p.71 ~ p.75
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The Examination of Refractive Correction and Heterophoria and Monocular Pupillary Distance on Myopic Elementary School Children Wearing Glasses in Gwangju City
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Hwang Kwang-Ha
Seong Jeong-Sub
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Abstract
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Purpose:This study was designed to investigate the condition of refractive correction and heterophoria and monocular pupillary distance on myopic elementary school children wearing glasses in Gwangju city.
Methods: Subjective refraction and objective refraction were examined after investigating heterophoria and monocular pupillary distance on 145 (290eye) elementary school children wearing myopia-corrected glasses.
Results:1. Anisometropia >2.00 D was present in 4 children (3%). 2. 9 anisometropia (47%) were present in 19 undercorrected visual acuity boy wearers. and 16 anisometropia (64%) were present in 25 undercorrected visual acuity girl wearers. 3. Among the 67 myopic glasses boy wearers, the distance between optical centers was coincided with the pupillary distance in 30% (Oculus Uterque), and discrepant in 70% (Oculus Uterque). Among the 78 myopic glasses girl wearers, the distance between optical centers was coincided with the pupillary distance in 23% (Oculus Uterque), and discrepant in 77% (Oculus Uterque). The mean optical center distance was longer than the pupillary distance on both boy and girl wearers 4. The result of measured heterophoria revealed 14% for orthophoria, 63% for exophoria, 23% for esophoria at far distance and 10% for orthophoria, 76% for exophoria, 14% for esophoria at near distance.
Conclusions: Correct refractive test and monocular pupillary distance must be examined because incorrect refractive test and pupillary distance induce asthenopia and heterophoria.
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KEYWORD
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Heterophoria, Esophoria, Exophoria, Monocular pupillary distance, Undercorrection, Visual acuity, Anisometropia, Anisopia
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