Classifications for Proliferative Vitreoretinopathy (PVR): An Analysis of Their Use in Publications over the Last 15 Years
Table 1
Classification from the Retina Society Terminology Committee (1983) [4]. This classification subdivided PVR into four stages, A, B, C, and D, apparently increasing in severity, from minimal to massive PVR. Modified from The Retina Society Terminology Committee, [4].
Retina Society Terminology Committee (1983)
Grade
Clinical signs
A (minimal)
Vitreous haze and pigment clumps
B (moderate)
Surface retinal wrinkling, rolled edges of the retinal, retinal stiffness, and vessel tortuosity
C (marked)
Full-thickness fixed retinal folds in
(i) C-1
(i) one quadrant,
(ii) C-2
(ii) two quadrants,
(iii) C-3
(iii) three quadrants
D (massive)
Fixed retinal folds in four quadrants that result in
(i) D-1
(i) a wide funnel shape,
(ii) D-2
(ii) a narrow funnel shape,
(iii) D-3
(iii) closed funnel without view of the optic disc