Tuyển tập các báo cáo nghiên cứu khoa học ngành y học tạp chí Medical Sciences dành cho các bạn sinh viên ngành y tham khảo đề tài: Usefulness of vitrectomy in the treatment of ocular toxoplasmosis. | Int. J. Med. Sci. 2009 6 139 Short Communication International Journal of Medical Sciences 2009 6 3 139 Ivyspring International Publisher. All rights reserved Usefulness of vitrectomy in the treatment of ocular toxoplasmosis Etienne H. Bovey Hôpital Ophtalmique Jules Gonin Lausanne Switzerland Published Although not useful in acute ocular toxoplasmosis vitrectomy can be indicated at a later stage for the management of complications such as persistent vitreous opacification secondary epimacular membrane and retinal detachment. In some cases vitreous opacification can persist despite intensive antibiotic and steroid treatment. After 2 or 3 months of treatment we must ask the following questions is the vitreous opacification due to inflammatory cells or to vitreous degeneration Is it still possible to reduce it with steroids If opacification is due to large vitreous cords and secondary vitreous degeneration steroid treatment is no longer indicated and vitrectomy could be proposed in order to clear the posterior cavity to improve the visual acuity and to avoid overtreatment with steroids. Epimacular membranes secondary to toxoplasmosis are not much different from idiopathic ones and the postoperative prognosis is good. Retinal detachment is rare. It can be either rhegmatogenous and or tractional. In some rare cases vitrectomy is indicated in the management of the acute phase especially when the diagnosis is not clear. Vitrectomy can help rule out ocular lymphoma and viral retinitis. At the beginning vitrectomy should be performed with the infusion turned off until the eye collapses. Generally we can obtain 1 cc of undiluted vitreous. Once the infusion is turned on other syringes are used for the collection of peripheral vitreous. With this material it is possible to examine the lymphocytes and perform PCR. Viruses can be detected as well by PCR. Vitrectomy increases the clearance of the posterior cavity. Some specialists believe that it can favorably .
