血液檢測傳播性強腮腺炎病毒IgG檢測卡

廣州健侖生物科技有限公司

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血液檢測傳播性強腮腺炎病毒IgG檢測卡

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【公司名稱】 廣州健侖生物科技有限公司
【市場部】     歐

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【騰訊  】 
【公司地址】 廣州清華科技園創(chuàng)新基地番禺石樓鎮(zhèn)創(chuàng)啟路63號二期2幢101-103室

玻璃體視網膜膜又稱增殖性玻璃體視網膜病變（PVR）。在視網膜脫離眼中大約30％有一定程度的膜形成。這種膜是細胞性無血管膜，可以在脫離視網膜的內面、外面或者玻璃體腔中見到。

視網膜前膜的收縮，可以導致裂孔變形、固定和視網膜皺褶。裂孔的變形及固定使術中定位及封洞困難，而皺褶的視網膜變得混濁及僵硬，以至很難與脈絡膜緊密粘附。視網膜下膜容易發(fā)生在長期視網膜脫離者，可與視網膜前膜共同存在。網膜下膜形成后，可見到視網膜線，廣泛分布時視網膜呈“曬衣桿”樣外觀，視盤周圍的網膜下膜引起“抽荷包”樣改變。這種膜的收縮，形成了切線牽引，松解十分困難，嚴重時導致全視網膜脫離，使視網膜縮短成板狀。玻璃體腔內的纖維細胞膜，可出現(xiàn)在視網膜脫離之前或脫離之后，是增殖反應的一部分，這種膜對視網膜的牽引，可造成視網膜脫離，又常使視網膜脫離復位手術失敗。

因此，玻璃體視網膜膜形成的有無、輕重，對視網膜脫離的形成、手術方式選擇及預后均有著重要意義。視網膜脫離手術前除應仔細尋找裂孔外，尚需詳細了解玻璃體與視網膜情況，根據(jù)膜的有無及等級，選擇恰當?shù)氖中g方式，并盡量減輕膜的牽引力或將膜切除，才能提高視網膜脫離手術的成功率。

視網膜脫離手術前為何要全面檢查眼底？

視網膜脫離手術前眼底檢查主要包括三個內容：視網膜脫離的詳細情況、玻璃體情況、玻璃體與視網膜的關系。這些檢查對手術方式的選擇、預后的判定有重要意義。

（1）視網膜脫離情況：①黃斑受累：如黃斑未受累，手術應盡早進行，以免脫離范圍擴大波及黃斑，損害中心視力。如黃斑已脫離，則向患者說明手術后中心視力不一定能恢復。 ②網膜脫離輪廓：預示著網膜裂孔的位置。如果視網膜脫離外形及網膜下液分布不能用發(fā)現(xiàn)的裂孔加以解釋，那么肯定還有其他裂孔被遺漏。③視網膜裂孔：仔細尋找裂孔，根據(jù)裂孔大小及位置選擇加壓區(qū)的范圍及加壓物的放置。④周邊視網膜變性區(qū)：視網膜裂孔大多位于變性區(qū)內或附近。對找不到裂孔的病例，將可疑變性區(qū)作裂孔處理。⑤視網膜下液：要注意觀察網膜下液的深度（尤其是裂孔下方）及網膜下液的流動性，因為這涉及到術中是否需放液。

Vitreoretinal membrane, also known as proliferative vitreoretinopathy (PVR). About 30% of the retinal detachment has some degree of film formation. This membrane is a cellular, avascular membrane that can be seen on the inside, outside or in the vitreous chamber from the retina.

Retinal membrane contraction, can lead to deformation of the hole, fixation and retinal folds. Holes deformation and fixation of intraoperative positioning and closure of the hole difficult, and wrinkled retina becomes turbid and stiff, it is difficult to closely adhere with the choroid. Subretinal membrane prone to long-term retinal detachment, with the pre-retinal co-exist. After the formation of subretinal film, you can see the retina line, the retina was widely distributed in the "clothes rod" -like appearance, subretinal membrane around the optic disc caused by "pumping purse" -like changes. This contraction of the film, the formation of a tangential traction, release is very difficult, resulting in serious retinal detachment, the retina shortened into a plate. Intravitreal fiber cell membrane, may appear before or after retinal detachment, is part of the proliferative response, this film on the retina traction, can cause retinal detachment, and often the retinal detachment surgery failed.

Therefore, the presence of vitreoretinal membrane formation, severity, the formation of retinal detachment, surgical options and prognosis are of great significance. In addition to retinal detachment surgery should be carefully looking for the hole, you still need to learn more about the vitreous and the retina, according to the presence and absence of the membrane, select the appropriate surgical approach, and try to reduce the traction of the membrane or the membrane in order to improve retinal detachment surgery The success rate. The company is located in:

Retinal detachment surgery before why a comprehensive examination of the fundus?

Retinal detachment before the operation of the fundus examination mainly consists of three elements: the details of retinal detachment, the vitreous, the vitreous and the retina. These tests on the choice of surgical approach, the prognosis of the decision is of great significance.

(1) retinal detachment: ① macular involvement: If the macula is not involved, surgery should be carried out as soon as possible to avoid the spread of the scope of macular affected, damage to central vision. If the macula has been detached, then to the patient that the center of vision after surgery may not be able to recover. ② retinal detachment outline: indicating the location of retinal breaks. If the retinal detachment profile and subretinal fluid distribution can not be found with the hole to be explained, then there are certainly other holes were missed. ③ retinal hiatus: Carefully look for the hole, according to the size and location of the hole to select the pressure zone and the placement of pressurized material. ④ peripheral retinal degeneration area: most of the retinal breaks in or near the degeneration area. For cases in which no hiatus can be found, the suspicious degeneration area is treated as a hiatus. ⑤ subretinal fluid: pay attention to observe the depth of subretinal fluid (especially below the hole) and subretinal fluidity, because it involves the need for fluid during operation.