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이윤하,김지업,라상훈,Yun Ha Lee,MD,Ji Eob Kim,MD,Sang Hoon Rah,MD,PhD 대한안과학회 2013 대한안과학회지 Vol.54 No.11
Purpose: To define the clinical characteristics of acute vertical strabismus in adults strabismus without known ocular and cranial external factors. Methods: We performed a retrospective study of 72 adult patients who developed acute vertical strabismus without known ocular and cranial external factors such as trauma or operation and were followed up for at least 6 months. Results: Undetermined cause (n = 41, 57%) was the most common etiology of acute vertical strabismus, followed by fourth cranial nerve palsy (n = 15, 20.8%), myasthenia gravis (n = 7, 9.7%), third cranial nerve palsy (n = 6, 8.3%), brain tumor (n = 2, 2.7%), and carotid-cavernous fistula (n = 1, 1.3%). The average vertical deviation at primary position was 7.2 prism diopter at initial visit. Thirty-eight (62.3%) patients recovered to orthophoria and 13 (21.3%) patients showed decreased level of diplopia. The average recovery period was 2.9 months. Ten cases remained as strabismus and 5 underwent surgery upon patient’s request. Conclusions: Unknown cause was the most common diagonosis of adult acute vertical strabismus without known ocular and cranial external factors. In the present study, 62.3% of patients recovered to orthophoria and 83.6% recovered without surgical procedures. J Korean Ophthalmol Soc 2013;54(11):1767-1771
상사시에서 수직근 후전술 후 사시각의 변화에 대한 고찰
이윤하,라상훈,Yun Ha Lee,Sang Hoon Rah 대한안과학회 2012 대한안과학회지 Vol.53 No.7
Purpose: To determine the extent of vertical rectus muscle correction in hypertropia showing good prognosis. Methods: A retrospective study was performed with a total of 16 patients who underwent superior or inferior rectus muscle recession surgery with a follow-up of more than 6 months. Vertical muscle recession of 1 mm per 2.5 to 3.0 prism diopters was performed according to the surgeon's discretion. Results: At 1 week after surgical correction, undercorrection, orthophoria, and overcorrection was observed in 4, 7 and 5 cases, respectively. At the final examination, ocular deviation was decreased in the undercorrected cases and maintained orthophoric except in 1 case where only a small amount of deviation recurred. However, in the cases of postoperative overcorrectionn, ocular deviation increased; 2 cases required surgical correction for consecutive hypertropia. Conclusions: When performing vertical rectus muscle recession in primary hypertropia, the amount of correction for orthophoria or undercorrection should be determined. J Korean Ophthalmol Soc 2012;53(7):1011-1015
MANAGEMENT TREND - 디지털 시대의 아날로그 프리미엄
이윤하,Lee, Yun-Ha 한국시멘트협회 2012 시멘트 Vol.193 No.-
시대가 디지털화 되어감에 따라서 아날로그에 대한 고객들의 향수는 더욱 증가하고 있다. 아날로그 제품은 차별적인 가치를 추구하는 고객들을 대상으로 프리미엄화에 성공하고 있다. 고객 가치 발굴 프로세스 안에서 최근 디지털의 트렌드 뿐 아니라 아날로그 시절의 감성을 결합해 본다면 고객들에게 더 의미 있는 가치를 발굴할 수 있을 것이다.