Retinopathy of Prematurity can be staged based on findings seen during examination of the fundus.
Finding
Stage
no demarcation line or ridge
0
demarcation line
I
ridge present without extraretinal fibrovascular proliferation
II
ridge with extraretinal fibrovascular proliferation
III
retinal detachment, which may be exudative, tractional or combined
IV
• spares fovea
IVa
• involves fovea
IVb
retina extensively detached and pulled anteriorly by fibrovascular proliferation
V
"Plus" disease: presence of posterior venous dilatation and arteriolar tortuosity
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Specialty: Ophthalmology, Pedatrics
