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KMID : 1036620150030040435
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Journal of Korean Clinical Health Science
2015 Volume.3 No. 4 p.435 ~ p.443
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The Change of the Near Eye Position according to the Spectacle and Contact Lens Wearing
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한선희:Han Sun-Hee
김봉환:Kim Bong-Hwan/김학준:Kim Hak-Jun/박준성:Park Jun-Sung/박혜빈:Park Hae-Been/김미정:Kim Mi-Jeong/박주형:Park Ju-Hyeong/김진솔:Kim Jin-Sol/이경훈:Lee Kyeong-Hoon/김종환:Kim Jong-Hwan/하나리:Ha Na-Ri
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Abstract
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Purpose. This study was to investigate comparison of the near eye position according to the spectacle and contact lens wearing.
Methods. We measured the AC/A ratio and near horizontal phoria using modified Thorington method in each case spectacle and contact lens wearing of equivalent spherical power after measuring the full corrected diopter for 20 subjects (men 5, woman 15, 21.15±1.35 years) without specific ocular diseases, ocular surgery experience and vision anomalies.
Results. It was shown high correlation between spectacle and contact lens wearing as AC/A ratio is a correlation coefficient 0.99 (p=0.00), near horizontal phoria is a correlation coefficient 0.95 (p=0.00). And contact lens wearing increased as AC/A ratio by 0.32±1.35 △/D (p=0.31) and near horizontal phoria by -0.17±2.18 △ (p=0.73) than spectacle wearing but there was no statistically significant difference. As the higher myopic grade AC/A ratio increased and then was shown decreased tendency in -6.00 D 0.05) and as the higher myopic grade near exophoria increased but there was no statistically significant difference (p>0.05).
Conclusions. We should consider that the subjects who had the lower AC/A ratio or higher near exophoria in -6.00 D
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KEYWORD
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AC/A ratio, Contact lens, Myopia, Near horizontal phoria, Spectacle
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