Shao-chong Zhang

Zhongshan University, Shengcheng, Guangdong, China

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Publications (3)0.9 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: To evaluate the conversion of macular function in diabetic macular edema (DME) after vitreous surgery. Seventeen eyes of 16 patients were assessed after pars plana vitrectomy for DME. Multifocal electroretinogram (mfERG) techniques were used to evaluate the effects of treatment on macular visual function, and retinal foveal thickness was determined by optical coherence tomography before and after vitrectomy. Patients were followed up continually for 7 months. The correlation between the change of tomographic features and visual functions were analyzed. During the follow-up period, the retinal function in macular areas recovered and the foveal thickness decreased gradually. While compared with preoperative values, the response of positive wave (P1) have shown decreases in implicit time and increases in amplitude since the forth and fifth postoperative month respectively (P < 0.05). While compared between each postoperative period, the P1 responses have increased significantly since the forth postoperative month. The correlation between the increase of P1 amplitude in macular area and the decrease of retinal foveal thickness was significant (r = 0.954, P < 0.001). Macular function get improvement gradually in DME after vitreous surgery; The restoration of macular function is coincident with the reduction of macular edema.
    [Zhonghua yan ke za zhi] Chinese journal of ophthalmology 03/2005; 41(3):216-20.
  • Chinese medical journal 06/2004; 117(5):764-6. · 0.90 Impact Factor
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    ABSTRACT: To investigate the effect of vitrectomy combined with full endocular panretinal photocoagulation in patients with late stage of proliferative diabetic retinopathy (PDR). Pars plana vitrectomy combined with full panretinal photocoagulation were undergone in 56 eyes (56 cases) with late stage of PDR, including 32 eyes with tractive retinal detachment. Preoperative and postoperative visual acuity, anterior segment by slit lamp and fundus examination by indirect ophthalmoscopy, as well as fluorescein angiography (FFA) were analyzed. Retina were reattached in 52 eyes. Vitreous hemorrhage, retinal bleeding, exudation and neovascular changes were not observed in these eyes. Non-irrigated areas were not found in 28/32 eyes in which FFA examination has been performed. Final visual acuity was improved in 52 eyes. Full endocular panretinal photocoagulation with low energy is an effective and safe procedure with low rate of complications for the late stage of PDR.
    [Zhonghua yan ke za zhi] Chinese journal of ophthalmology 01/2004; 39(12):740-2.