열공망막박리에서 실리콘기름 제거술 후 발생하는 일시적인 저안압증
Transient Hypotony after Silicone Oil Removal in Rhegmatogenous Retinal Detachment
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목적: 열공망막박리 환자에서 유리체절제술과 실리콘기름 주입술을 시행하고 이후 실리콘기름 제거술을 시행 하였을 때 수술 후 일시적인 저안압을 유발하는 위험인자와 시간에 따른 안압과 시력의 변화를 분석하였다. 대상과 방법: 열공망막박리로 실리콘기름 제거술을 시행한 52명, 54안의 의무기록을 분석하였다. 위험인자로 나이, 안압, 안축장, 공막두르기술 유무, 주입한 실리콘기름의 양, 안압약의 개수 등을 포함하였다. 수술 전 후의 안압과 최대 교정시력을 측정하였다. 결과: 수술 후 6 mmHg 이하의 저안압은 10안(18.5%)에서 관찰되었다. 어린 나이, 긴 안축장 길이가 위험인자로 분석되었으며, 다변량분석에서는 26 mm 이상의 안축장 길이가 위험인자로 나타났다. 7안은 특별한 조치 없이 정상 안압으로 회복되었고, 2안은 과플루오로프로판가스의 유리체강내 주입 후, 1안은 전방내 평형염액 주입 후에 정상 안압으로 회복되었다. 수술 후 14일 이후에는 저안압군과정상안압군 간의 안압과 시력은 차이가 없었다. 결론: 열공망막박리에서 실리콘기름 제거 후 일시적인 저안압은 흔히 발견되며 최종시력과 안압에는 영향이 없으나 수술 후 초기에세심하게 관찰해야 한다.
Abstract
Purpose: To determine the risk factors for transient hypotony after silicone oil removal in rhegmatogenous retinal detachment and to analyze changes in intraocular pressure and visual acuity after silicone oil removal. Methods: The medical records of 54 eyes of 52 patients who underwent pars plana vitrectomy, silicone oil tamponade followed by silicone oil removal due to rhegmatogenous retinal detachment, were reviewed. Results: The incidence of transient hypotony after silicone oil removal was 18.5%. Young age (p = 0.011) and axial length (p = 0.002) were risk factors for transient hypotony based on univariate analysis. In multivariate analysis, axial length longer than 26 mm was the only risk factor for transient hypotony (p = 0.005). Seven hypotony patients recovered to normal intraocular pressure spontaneously within 2 weeks. In 2 patients, intraocular pressure was normalized after intravitreal injection of C3F8 gas and 1 patient recovered after a balanced salt solution injection into the anterior chamber. Two weeks after silicone oil removal, there was no significant difference in intraocular pressure between the hypotony group and normal intraocular pressure group. Additionally, there was no statistically significant difference in best corrected visual acuity between the 2 groups after 2 weeks. Conclusions: Although transient hypotony after silicone oil removal in rhegmatogenous retinal detachment was frequently observed in the present study, the final best corrected visual acuity and intraocular pressure was not always affected. Ocular hypotony should be examined thoroughly in the early postoperative period.
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