ROP Stage (Retinopathy of Prematurity)
The International Classification of Retinopathy of Prematurity (ICROP) stage of acute ROP at the vascular/avascular junction, stages 1/2/3/4/5.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- ROP stage
- 3 - ridge with fibrovascular proliferation
Result: ROP stage 3: a ridge with extraretinal fibrovascular proliferation.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Stage 1
- A flat, white demarcation line.
- Stage 2
- A ridge (height and width above the retinal plane).
- Stage 3
- A ridge with extraretinal fibrovascular proliferation.
- Stage 4
- Partial retinal detachment (4A extrafoveal, 4B foveal).
- Stage 5
- Total retinal detachment.
What you enter
- ROP stage
How this is calculated
International Committee for the Classification of Retinopathy of Prematurity. The International Classification of Retinopathy of Prematurity revisited. Arch Ophthalmol. 2005;123(7):991-999. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.