MESSIDOR-2

1748 fundus images with DR grading (0-3 Retinopathy Grade) and macular edema risk (0-2).

At a glance

Field	Value
Short name	messidor2
Full name	MESSIDOR-2
Primary category	fundus
Contained modalities	fundus
Tasks	grading, classification
Samples	1,748
Classes	4 (Grade 0, Grade 1, Grade 2, Grade 3)
Splits	all
Size	3.0 GB
Source-stated terms	Research only — requires registration
Normalized terms	research-only
Descriptive screening label	Research or challenge restriction recorded; check source
Terms scope	dataset_files
Access friction	self_service_authenticated
Route backend	Manual (upstream-gated)
Availability	available (checked 2026-07-21)
Acquisition support	guided_instructions_only
Legacy sample-loader status	Standard loader included

Notes

Free registration required at adcis.net before downloading.

Access preflight and acquisition

CLI

# Read-only preflight
eyehub download messidor2 --data-dir ./data --dry-run --json

# Explicit transfer, only when preflight reports supported behavior
eyehub download messidor2 --data-dir ./data

Python

from eyedatahub.acquisition import preflight_dataset
from eyedatahub.datasets.registry import REGISTRY

ds = REGISTRY.get_dataset('messidor2')
print(preflight_dataset(ds, './data'))  # no transfer

Upstream page: adcis.net/en

Source-term evidence: adcis.net/en

Loader example

This entry includes a standard DatasetSample loader.

from pathlib import Path
from eyedatahub.datasets.registry import REGISTRY

data_dir = Path('~/.eyedatahub/data').expanduser()
ds = REGISTRY.get_dataset('messidor2')
samples = ds.load(data_dir, split='all')
for s in samples[:5]:
    print(s.sample_id, s.label, s.image_path)

Citation

BibTeX

@misc{messidor2,
  title  = { MESSIDOR-2 },
  note   = { Decencière et al., 'Feedback on a publicly distributed image database: the Messidor database', Image Analysis & Stereology 2014 },
  year   = { 2014 },
  url    = { https://www.adcis.net/en/third-party/messidor2/ },
}

Plain text

Decencière et al., 'Feedback on a publicly distributed image database: the Messidor database', Image Analysis & Stereology 2014.

Source-stated terms

• Raw source string: Research only — requires registration
• Normalized category: research-only
• Apparent scope: dataset_files
• Descriptive screening label: Research or challenge restriction recorded; check source

⚠️ Source-stated terms, scope, and normalized labels are curation metadata, not legal advice or a permission finding. Review the current official source before transfer or reuse.

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