Objective To study the ultrasonographic manifestation character of age-related macular degeneration (AMD). Methods The ultrasonographic manifestation of thirty-five cases (38 eyes) of AMD diagnosed by fundus fluorescein angiography (FFA) with positive findings of ultrasonic B-scan were analysed． Results The ultrasonic appearance of interlamellar transaudient cleft were found in 26 eyes, in which FFA appearance were serous detachment of pigment epithelium and subretinal neovascularization, 5 of them associated with small excavation of choroid, 4 of them associated with b echo belt at the posterior edge of the interlamellar transaudient cleft in which the FFA appearance was extensive subretinal neovascularization．In another 4 eyes with choroidal hematoma under FFA revealed thin echo light spots in the interlamellar transaudient cleft． There was scar-staining in the other 8 eyes in which the ultrasonic appearance showed an unequal thickening of the ocular wall in the posterior pole,unequal echo of interior edge and irregular inner echo． Conclusion The main ultrasonographic manifestation of AMD is the presence of interlamellar transaudient cleft in the thickened ocular wall. (Chin J Ocul Fundus Dis,2000,16:228-230)
Purpose To investigate the blood dynamic feature of choroid in normal eyes. Methods Indocyanine green angiography (ICGA) was performed in each of fifty consecutive normal eyes. Results The earliest fundus fluorescence emerged at the mean timiest fundus fluorescence emerged at the mean time of (14.25plusmn;3.59) seconds,it represented the beginning of filling of choroidal arteries located at the posterior pole.The irrigation of choroidal veins appeared at the mean time of (15.03plusmn;3.44) seconds.At the time threre was the overlapping imaging appearance of choroisal arteries and veins.The most hyperfluorescent areas appered at the mean time of(16.75plusmn;3.78) seconds with definite shapes located at the posterior pole,and this stood for the fluorescence stage of choroidal arteries,veins and capillaries.The fluorescence of choroidal vein began to weaken at 11prime;58Prime;15plusmn;2prime;39Prime;86,and revealed the imaging of late stage of choroidal veins.The latest stage of ICGA was at 22prime;13Prime;22plusmn;3prime;30Prime;55,and presented obscure fluorescence. Conclusion The measurement results and fluorescent features of ICGA of normal eyes can offer consulted bases for the clinical diagnosis of the choroidal diseases. (Chin J Ocul Fundus Dis,1998,14:68-71)
Objective To observe the clinical effect of minimally invasive vitreoretinal (MIV) surgery combined with a modified suprachoroidal drainage surgery for retinal detachment associated with choroidal detachment (RRDCD). Methods A prospective clinical study. A total of 27 patients (27eyes) diagnosed as RRDCD were recruited in this study. There were 16 males and 11 females, with an average of (53.67±14.82) years. The mean intraocular pressure (IOP) was (8.2±2.1) mmHg (1 mmHg=0.133 kPa) and best corrected visual acuity (BCVA) of minimum resolution angle logarithm (logMAR) was 1.87±0.58. All subjects underwent 23G MIV combined a modified suprachoroidal drainage surgery, which 23G stab knife and 1 ml syringe needle were used for surgery. The visual outcome, IOP, rate of retinal reattachment and complications were comparatively analyzed preoperatively and postoperatively. Results At 1 day, 10 days, 1 month and 3 months after surgery, the average of logMAR BCVA were 1.62±0.67, 1.51±0.63, 1.39±0.54, 1.32±0.56 and the mean of IOP were (13.47±5.06), (14.43±4.09), (14.89±4.30), (15.38±3.37) mmHg, respectively. There were significant differences of logMAR BCVA and IOP between before and after surgery (F=6.19, 15.21; P＜0.05). Retinal reattachments were achieved in 27 eyes (100%) at 1 day and 10 days after surgery. At 1 month and 3 months after surgery, the rate of retinal reattachment were 88.89% (24 eyes) and 85.19% (23 eyes), respectively. No severe complications such as endophthalmitis and choroidal hemorrhage were found at follow-up visits. Conclusion MIV combined with a modified suprachoroidal drainage surgery is an effective and safe treatment for RRDCD, which can promote retina tear closure, improve visual acuity.