early treatment of diabetic retinopathy scale

1. Early Treatment of Diabetic Retinopathy Scale (ETDRS)
MILD
NPDR
MODERATE
NPDR
SEVERE NPDR
EARLY PDR
HIGH-RISK PDR
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2. Continue
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MILD NPDR
At least one microaneurysm, and
Criteria not met for more severe Retinopathy
MODERATE NPDR
Hemorrhages/Microaneurysms > standard photograph 2A
And/Or Cotton wool spots, venous beading or IRMA
definitely present;
And criteria not met for more severe retinopathy
Stages of ETDRS
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4. Continue
d…
SEVERE NPDR
Cotton wool spots, venous beading, and IRMA definitely
present in at least two of photographic fields 4 to 7;
Or
two of the three preceding features present in at least two
fields 4 to 7 and hemorrhages/microaneurysms present in
fields 4 to 7 > standard photograph (2A) in at least one of
them;
Or
IRMA present in each of fields 4 to 7 and > standard
photograph (8A) in at least two of them;
And
criteria not met for more severe retinopathy
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6. EARLY PDR
New vessels; And criteria not met for high risk PDR
HIGH-RISK PDR
New vessels on or within one disc diameter of the optic disc
(neovascularization of the disc) NVD > standard photograph
10A (approximately 1/4 - 1/3 disc area) with or without
vitreous or preretinal hemorrhage;
Or vitreous and/or preretinal hemorrhage accompanied by
new vessels, either NVD < standard photograph 10A or new
vessels elsewhere (NVE) > 1/4 disc area
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