Abrishami Mojtaba, Shariati Mehrdad Motamed, Bolouki Ali, Zamani Ghodsieh
Eye Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
Case Rep Ophthalmol Med. 2022 May 9;2022:5035361. doi: 10.1155/2022/5035361. eCollection 2022.
To report an unusual case of gas expansion following oxygen therapy in a patient with sulfur hexafluoride (SF) 20% tamponade after pars plana vitrectomy. . A 40-year-old man came to the clinic with severe ocular pain and redness and also vision decrease in his left eye three days after uncomplicated 23-gauge pars plana vitrectomy, internal limiting membrane peeling combined with phacoemulsification, and using 20% SF injection as a tamponade agent due to significant cataract and a full-thickness macular hole. In ophthalmic examinations of his left eye, high intraocular pressure (approximately 70 mmHg), a flat anterior chamber, and a gas-filled vitreous cavity were found. The patient had been hospitalized the day before due to carbon monoxide poisoning and had undergone oxygen therapy with a pure 100% mask for three hours.
It seems that oxygen therapy or carbon monoxide poisoning increases the volume of gas in the patient's vitreous cavity and the nonexpansile percentage of SF expands.
报告1例在玻璃体切割术后用20%六氟化硫（SF）填充眼内的患者，在接受氧疗后出现气体膨胀的罕见病例。一名40岁男性在接受无并发症的23G玻璃体切割术、内界膜剥除联合超声乳化白内障吸除术，并因严重白内障和全层黄斑裂孔使用20% SF注射液作为填充剂3天后，前来诊所就诊，主诉左眼剧痛、眼红且视力下降。左眼眼科检查发现高眼压（约70 mmHg）、前房扁平以及玻璃体腔充满气体。该患者前一天因一氧化碳中毒住院，并使用纯100%面罩进行了3小时的氧疗。
氧疗或一氧化碳中毒似乎会增加患者玻璃体腔内气体的体积，并且使SF的非膨胀比例增大。
