The Prevalence and Distribution of Vitreoretinal Interface Abnormalities among Urban Community Population in China

Table 1

Definition for VIAs.

	Signs on OCT Scan	Representative
ERM	Which is characterized by hyperreflectivity of the membrane with corrugation on the surface of the internal membrane.	Figure 2(a)
Vitreomacular traction	Which was defined by the fact that the posterior hyaloid had detached from the retina but remained adhered to the retina in at least one location.	Figure 2(b)
Macular cysts	Which were defined as one or more cavities with well-defined margins within the retina that were often within low reflection.	Figure 2(c)
FTMHs	Which were considered as having hole in fovea including FTMH (steep, wide, foveal contours) and PTMH (lamellar).	Figure 2(d)
PVD	Which was defined by the fact that the posterior vitreous had detached from the retina without any adhesion.	Figure 2(e)

VIAs: vitreoretinal interface abnormalities.