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KMID : 1159320170190030241
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Korean Journal of Vision Science
2017 Volume.19 No. 3 p.241 ~ p.248
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A Study on Changes of Near Phoria Before and After Wearing Smart Glasses
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Yoon Min-Hwa
Choi Young-Sun
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Abstract
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Purpose: This study was designed to investigate the effect of smart glasses on near phoria by comparison of the changes of near phoira before and after wearing smart glasses.
Methods: Fifty five male and female students in DongKang College were participated in the study. All prticipants showed normal binocular vision, corrected vision of 1.0 or above, monocular vision of 0.9 or above, and no systemic disease and eye disease. Phoria test was performed under the semi-dark room of approximately 80 Lux, illuminating the maddox rod on the right eye of an examinee, and illuminating penlight at 40cm on the left eye. First, an examinee was asked if they can see a point light source and a longitudinal light. When they mentioned the two lights were matchedthe result was recorded. After moving the point light source and the longitudinal light away, we recorded the figures when the point light source and longitudinal light matched again.
Results: Of 55 examinees, it was appeared that 15 people(27.27%) were orthophoria, 35 people(63.64%) were exophoria, 3 people(5.45%) were esophoria and 2 people(3.64%) were vertical phoria. Fifteen of them with orthophoria appeared esophoria of +2.80±1.30△ after wearing smart glasses(p<0.005), and seven did vertical phoria of 1.14±1.48△(p<0.005), showing that these figures are all statistically significant. Before wearing smart glasses, exophoria was decreased from -7.26±4.78△ to -6.16±4.87△ (p<0.005). Esophoria was increased from +3.33±2.52△ to +4.33±0.58△, whereas the change is not statistically significant(p>0.05). Vertical phoria was increased from 0.75±0.35△ to +2.50±0.70△, showing no significant difference(p>0.05).
Conclusion: It would be considered that wearing smart glasses showing augmented reality contribute to esophoria and vertical phoria to those withorthophoria as well as those with esophoria.
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KEYWORD
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Smart Glasses , Phoria , Maddox Rod
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Listed journal information
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