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Single isolated cotton-wool spots.

A Remky1, O Arend

  • 1Augenklinik, Medizinische Fakultät, RWTH, Aachen, Deutschland. andreas.remky@post.rwth-aachen.de

Ophthalmologica. Journal International D'Ophtalmologie. International Journal of Ophthalmology. Zeitschrift Fur Augenheilkunde
|March 18, 2000
PubMed
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Isolated cotton-wool spots in healthy individuals may not indicate serious systemic disease. These benign findings can resolve spontaneously, suggesting they are often misinterpreted as inflammatory lesions.

Area of Science:

  • Ophthalmology
  • Retinal Diseases
  • Diagnostic Imaging

Background:

  • Cotton-wool spots (CWS) are typically associated with systemic conditions like hypertension or diabetes.
  • Their presence in otherwise normal fundi raises diagnostic challenges, potentially mimicking inflammatory lesions.

Observation:

  • Four patients presented with sudden blurred vision or scotomas.
  • Fundus examination revealed isolated cotton-wool spots without other retinal abnormalities.
  • Two patients were pregnant, and three were initially treated for toxoplasmosis.

Findings:

  • All patients were seronegative for common infections (HIV, toxoplasmosis) and autoimmune markers.
  • Blood pressure, HbA1c, and blood counts were within normal limits.
  • Symptoms resolved, and CWS diminished or disappeared with clearer borders on follow-up.

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Implications:

  • Isolated cotton-wool spots in healthy subjects may be benign and self-limiting.
  • These findings highlight the importance of avoiding misdiagnosis of acute inflammatory retinochoroidal lesions.
  • Further investigation is warranted to understand the etiology of these isolated CWS.