Table 1 Revised FEVR clinical staging system 2014 and number of eyes

1

Avascular periphery or anomalous intraretinal vascularization

1A

Without exudate or leakage

1B

With exudate or leakage

2

Avascular retinal periphery with extraretinal vascularization

2A

Without exudate or leakage

2B

With exudate or leakage

3

Extramacular retinal detachment

3A

Without exudate or leakage

3B

With exudate or leakage

4

Macula-involving retinal detachment, subtotal

4A

Without exudate or leakage

4B

With exudate or leakage

5

Total retinal detachment

5A

Open funnel

5B

Closed funnel