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Diabetic Retinopathy – Features of Diabetes : Hard Exudates

Hard exudates are distinct yellow-white intra-retinal deposits which can vary from small specks…

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to larger patches…

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and which may evolve into rings known as circinates…

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Ultimately large confluent plaques can form…

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Hard exudates are largely made up of extracellular lipid which has leaked from abnormal retinal capillaries, hence there is often associated retinal oedema (which is not visible using direct ophthalmoscopy). The underlying problem is often apparent as the exudates will form a ring or ‘circinate’ pattern around the leaking vessels (which may be seen as a cluster of microaneurysms).

Hard exudates are found principally in the macular region and as the lipids coalesce and extend into the central macula (fovea), vision can be severely compromised.

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Diabetic Retinopathy Menu

Introduction
  • Aims and Audience
  • How Images Work
Normal Features
  • General
  • Racial Pigmentation
  • Localised Pigmentation
  • Drusen
  • Myelination
Features of Diabetes
  • Microaneurysms
  • Intraretinal Haemorrhages
  • Hard Exudates
  • Cotton-wool Spots
  • Venous Abnormalities
  • IRMAs
  • Neovascularisation
  • Retinal Detachment
  • Vitreous Haemorrhage
  • Sub-hyaloid Haemorrhage
Classification
  • Background
  • Pre-proliferative
  • Proliferative
Screening
  • Screening
Treatment
  • Treatment

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