林勇義 醫師 於 2007-01-22 09:55:14 回覆

A posterior vitreous detachment (PVD) occurs when the collagen fibers which make up the vitreous cavity condense, causing the gel to "pull forward." Patients typically complain of seeing central floaters and/or flashes of light, usually in their peripheral vision. This is a normal age-related phenomenon, but in some patients, it can be associated with a retinal tear or detachment.一般玻璃體液化或是單純condense vitreous 都沒有關係.但是如果一旦因為condense vitreous 而造成PVD的情況就要特別注意.因為有可能造成vitreous traction而將視網膜拉扯出裂孔.