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KMID : 1159320160180020175
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Korean Journal of Vision Science
2016 Volume.18 No. 2 p.175 ~ p.182
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Appeared Changes of Binocular Function after Refractive Surgery
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Kang Joong-Gu
Wi Dae-Gwang
Lee Koon-Ja
Shin Ki-Cheul
Leem Hyun-Sung
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Abstract
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Purpose: With myopic refractive surgery patients who received preoperative amplitude of accommodation, phoria degree, binocular stereopsis, and functional changes were followed for 3 months.
Methods: Myopic refractive surgery in twenties of 50 people(23 males, 27 females) to target refractive surgery before and after surgery(1week, 1month, 3months) and the amplitude of accommodation test(Push-up method), the phoria test of far and near(Howell by chart for 3 m, 33 cm test), stereo-acuity test(Titmus steropsis chart) were evaluated.
Results: Refraction before refractive surgery were the value -4.96±2.17D, three months after surgery refractions were the value -0.54±0.44D. Accommodation before refractive surgery were the 9.85±2.29D after surgery, 1week, 1month and 3months respectively accommodation 7.85±2.05D, 7.99±1.81D, 9.16±2.01D measured, and a week after surgery fell accommodation, the pattern shown to increase again after three months(F=21.83, p<0.001). The far phoria of before refractive surgery were -0.03±1.96△, three months after surgery the far phoria were measured to be 0.15±1.96△,
also the near phoria before surgery ranged -0.54±1.61△, the near phoria were measured to be -0.46±1.60△, three months after surgery. Before and after surgery, compared to the surgery before the far and near phoria were not statistically significant. The value of stereo-acuity before refractive surgery were measured to be 52.40±12.70 sec, a week after surgery were 63.00±14.74sec, the value of one month after surgery 60.00±12.94 sec, the values of three month ere measured to 52.80±12.13 sec(F=8.06, p<0.001).
Conclusions: With myopic refractive surgery patients who received preoperative analysis of the change of the accommodation and stereo-acuity a week after surgery and then increased again after 3 months to reduce pattern could be observed.
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KEYWORD
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Refractive surgery, Binocular function, Accommodation, Phoria, Stereo-acuity
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