Objective To observe the clinical characteristics of patients with macular branch retinal vein occlusion (MBRVO) and the changes of the area of foveal avascular zone (FAZ).Methods The data of 69 eyes of 69 patients with MBRVO, who had been diagnosed by ophthalmoscopy, slit-lamp examination and fluoresce in angiography, were retrospectively studied. The relationship of locations between artery and vein on the obstructive site, and the characteristics of fundus pictures, retinal vasculature changes and the complications were analyzed. In 69 patients with MBRVO, 36 had the course of disease for more than 3-6 months, of whom the area of FAZ was compared with that of 30 healthy people.Results In 69 patients, superior MBRVO occurred in 45 eyes (65.22%), and inferior MBRVO occurred in 24 eyes (34.78%). Most of the arteries were anterior to the veins at the obstructive site. Four clinical types of MBRVO were found, and the main complication was macular edema. There was a significant difference in area of FAZ between patients with MBRVO and healthy people (P＜0.05). Conclusion There are several clinical characteristics of MBRVO with different manifestations. The area of FAZ of patients with MBRVO is obviously lager than that of the healthy people. (Chin J Ocul Fundus Dis，2003，19：269-332)
Purpose To observe the clinical features and visual acuity of the eyes with idiopathic macular holes. Methods We reviewed the clinical materials of 23eyes of 18 patients with idiopathic macular holes and the follow up results from 6 to 120 months. Results In the initial examinations of 22 eyes,the numbers of eyes with stagesⅠ-Ⅳ macular holes were5,4,10,3 eyes respectively,and funds fluorescein angiography showed there were focal transmission of choroidal fluorescein in 17 eyes (stagesⅡ～Ⅳ).Macular hole ocurred in one eyes during follow up.At the final examination of 23 eyes,the numbers of eyes with stages Ⅰ～Ⅳ macular holes were 2,2,9,8 eyes respectively .Full-thickness macular hole of 2 eyes closed naturally after posterior vitreous detachment.The time interval of the subjective visual loss on stage Ⅰ was 5-8 months,stageⅡ8-20 months,stageⅢ12-126 months ,and the average visual acuity on stageⅠwas 0.7,stage 0.55,stageⅢ0.08,and stage Ⅳ0.08 Conclusion Approximately 60% of impending (stage Ⅰ) hole progress to full thickness holes, the full thickness holes were usually enlarged and the visual acuity of affected eyes decreased as the natural course was prolonged . (Chin J Ocul Fundus Dis,1998,14:222-223)