孤立的视网膜囊肿特别是巨大囊肿十分罕见 ,国内外报告很少。我们遇到 2例 ,现报告如下。1　临床资料例 1　女 ,41a,护士 ,因左眼视力下降伴眼前黑影飘动2 mo余收入院。全身检查无异常。眼部检查 :右眼正常 ,左眼视力 0 .6 ,玻璃体呈絮状混浊 (+++) ,颞侧视网膜 1∶ 30～ 4∶ 0 Isolated retinal cysts, especially large cysts are very rare, few reports at home and abroad. We encountered two cases, are as follows. 1 clinical data example 1 female, 41a, nurses, due to the left eye vision decreased with the shadow before the flapping 2 mo remaining in the hospital. No abnormalities in the whole body examination Eye examination: the right eye is normal, visual acuity of the left eye 0.6, vitreous floc cloudy (+++), the temporal retina 1:30 ~ 4: 0