30 cases of clinical observation of intravitreal silicone oil injection Intraocular pressure, maintain 21.89 ~ 25.81mmHg range.General silicone oil injection volume of 4 ~ 6ml.On the operation effect of the operation before lens opacity and crystal cutting, and conventional beneath the peripheral iris Ministry of circumferential resection alone L. 2 results of 2.1 retinal anatomy reduction: after operation after 1 to 24 months (average L2 months) of follow-up, 30 cases 30 eyes with complicated retinal detachment retina reattached completely in 25 cases, accounting for 83. 3% of.Table 1 Effect of operation.2.2: functional outcome in 30 patients after operation visual acuity increased in different degrees, detailed circumstance sees a table 2.2.3: operation complications of lens opacities aggravated in 2 cases, iatrogenic dissection of L2 cases, corneal degeneration in 2 cases, 1 cases of secondary glaucoma. 3 table 130 cases of various network and the operation effect of 3.1 cases of modern vitreous operation as a conventional operation method is difficult to cure complicated retinal detachment case provides a new effective way. For complicated with severe PVR retinal detachment, retinal detachment and tremendous hiatus L type retinal detachment.Through the vitreous operation, removal of turbidity refractive interstitial, lifting the retinal traction and silicone oil filled in the vitreous cavity generated within the top pressure, fixed hiatus L valve. The previous conventional buckling surgery not treatment of patients with complicated retinal detachment, there is hope.The experimental group 83.3% success rate.Table 230 cases of preoperative, postoperative visual acuity of 3. 2 silicone oil vitreous cavity filling, convenient safe.Silicone oil stable physical properties.Not compatible with air and water, and intraocular implant material essential characteristics, for visible light from passing completely through the. Is inert, can restrict the vitreous cavity of the proliferation of cells and biological medium mobile, in addition the vitreous cavity stability of silicone oil bubble to make the traction retinal force by the radially into parallel with retinal detachment of the retina, which is flat or confined to peripheral retinal detachment. Silicone oil without expansion effect after operation, generally do not occur in acute elevated intraocular pressure, the experimental group with a case of acute glaucoma.Silicone oil proportion is 0.97, slightly lighter than water, prone position, can gradually flatten uplift of the retina, but not as postoperative intraocular gas injection in patients as absolute requirements for position. Generally one week after the operation in patients with postural free, just after the daily head-down 4 hours, reduced pain.Silicone oil is not carcinogenic, high temperature resistant disinfection.Is the best vitreous substitute. 3.3 modern vitreous operation method has the advantages of simple operation, less dangerous after retinal reattachment operation, high success rate, to avoid further damage to visual function.But must have certain equipment and has a vitreous operation experience, the experimental group the incidence of iatrogenic dissection of L2 cases are given, the operation of laser processing. 3.4 major complications of silicone oil: opacity of lens and corneal degeneration, silicone oil lasts for a long time and crystal, corneal contact, due to its blocking organization and intraocular fluid asked material exchange and silicone oil itself physical stimuli, which led to the opacity of lens or opacity of exacerbations, degeneration of cornea. The experimental group of 2 patients of cataract aggravated, 2 cases of iris depigmentation serious trauma patients.Silicone oil into the anterior chamber, causing degeneration of cornea.The glaucoma: This set of experiments with L patients with silicone oil were secondary glaucoma, anterior chamber within a given viscoelastic into a backlog of silicone oil induced glass chamber,franklin marshall femme, strict control of posture, topical ocular hypotensive medication, control.