Journal of Korean Ophthalmic Optics Society (한국안광학회지)

The Korean Ophthalmic Optics Society (한국안광학회)
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Change of Contrast Sensitivity in Peripheral Vision Following Eccentric Viewing Training

중심외주시 훈련 후 주변시야에서의 대비감도 변화

  • Seo, Jae-Myoung (Dept. of Optometry, Gwangyang Health College) ;
  • Lee, Ki-Young (Dept. of Biomedical Engineering, Chonnam National University) ;
  • Lim, Yong-Moo (Dept. of Ophthalmic Optics, Gwangju Health University)
  • 서재명 (광양보건대학교 안경광학과) ;
  • 이기영 (전남대학교 의공학과) ;
  • 임용무 (광주보건대학교 안경광학과)
  • Received : 2014.01.12
  • Accepted : 2014.03.15
  • Published : 2014.03.31
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Abstract

Purpose: This study was to investigate the functional improvement in peripheral vision following eccentric viewing training. Methods: 14 subjects with normal vision took a part with their right eye, peripheral retinal which is $20^{\circ}$ lateral area from the fovea was examined for contrast sensitivity(CS). Eccentric viewing training was performed for 21days with an hour image viewing and examination was repeated. Results: The critical durations for 0.7 cpd were increased 2.67(467 ms) for pre-eccentric viewing training to 2.79(616 ms) for post-eccentric viewing training (p>0.05). The critical durations for 3.0 cpd were also increased 2.53(341 ms) for pre-eccentric viewing training to 3.04(1102 ms) for post-eccentric viewing training (p>0.05). Conclusions: It is recommended to use higher spatial frequency with higher CS for eccentric viewing training and to train more frequently for a short time. Moreover, the study on Korean standardizing of the visual rehabilitation for low vision based on the etiology is sorely required.

목적: 중심외주시 훈련 전후 대비감도를 검사하여 망막 주변부의 기능적 개선 여부를 알아보고자 하였다. 방법: 정상 시각을 가진 14명의 성인 남녀의 우안을 대상으로 중심와에서 $20^{\circ}$ 이측으로 떨어진 망막 주변부의 대비감도를 검사했다. 60분간 영상을 21일 동안 중심외주시 훈련 후 대비감도를 다시 검사하여 사후 검정했다. 결과: 시간적 가중에 따른 임계점 분석에서 중심외주시 훈련 전 0.7 cpd에서 임계점은 2.67(467 ms)이었으며 훈련 후 2.79(616 ms)로 증가했다 (p<0.05). 훈련 전 3.0 cpd에서 임계점 역시 2.53(341 ms)이었으며 훈련 후 3.04(1102 ms)로 증가했다(p<0.05). 결론: 중심외주시 훈련시 선명하고 작은 글씨체의 문자로 훈련하는 것을 권장하며 짧은 시간동안 자주 반복하는 것이 보다 효과적이다. 아울러, 저시력 환자에 대한 각 병변별 시재활훈련을 할 수 있는 기준에 대한 연구가 절실하다.

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