The Biomicroscopic Variations of Posterior Vitreous Detachments

ABSTRACT

We performed this study to identify the biomicroscopic variations of posterior vitreous detachment(PVD)and to evaluate the clinical relationship of the vitreoretinal pathology and variations of PVD. Three hundred eyes with PVD were examined with biomicroscope using a 3CCD camera and a personal computer developed by us. The biomicroscopic variations were classifed as complete PVD with collapse, complete PVD without collapse, partial PVD with TPVC(thickened posterior vitreous cortex), or partial PVD without TPVC. In each type, the following pathologies were frequently observedin complete PVD with collapse(150 eyes), age related changes without vitreoretinal diseases(72 eyes, 48%)and high myopia(41 eyes, 27.3%), in complete PVD without collapse(96 eyes), age related changes without vitreoretinal diseases(33 eyes, 34.3%), nonproliferative diabetic retinopathy(20 eyes, 20.8%), high myopia(15 eyes, 15.6%), branch retinal vein occlusion(14 eyes, 14.5%), in partial PVD with TPVC(36 eyes), proliferative diabetic retinopathy(18 eyes, 50%)and uveitis(10 eyes, 27.7%)and in partial PVD without TPVC(18 eyes), age related changes without vitreoretinal diseases(9 eyes, 50%). The type of PVD was significantly associated with the prevalence of each vitreoretinal disease(P<0.001). Biomicroscopic variations of PVD can be classified into four types, which was useful to evaluate the certain vitreoretinal disorders.