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Monthly Archives: January 2014

Retinal Exudates

Retinal Exudates

Retinal Exudates caused by chronic localized retinal oedema and develop at the junction of normal and oedematous retina.They are composed of lipoprotein and lipid-filled macrophages located mainly within the outer plexiform layer . • Waxy yellow lesions with relatively distinct margins, often arranged in clumps and/or rings at the posterior pole, typically surrounding leaking microaneurysms • With time number and ... Read More »

Retinal haemorrhages

Retinal haemorrhages

Retinal haemorrhages 1 –Retinal nerve fibre layer haemorrhages arise from the larger superficial pre-capillary arterioles and  are flame-shaped 2- Intraretinal haemorrhages arise from the venous end of capillaries and are located in the compact middle layers of the retina with a resultant red ‘dot/blot’ configuration 3- Deeper dark round haemorrhages represent haemorrhagic retinal infarcts and are located within the middle ... Read More »

Diabetic Retinopathy Microaneurysms

Diabetic Retinopathy Microaneurysms

Diabetic Retinopathy Microaneurysms Microaneurysms are localized out-pouchings, mainly saccular, of the capillary wall that may form either by focal dilatation of the capillary wall where pericytes are absent, or by fusion of two arms of a capillary loop . Most develop in the inner capillary plexus (inner nuclear layer) . Microaneurysms may leak plasma constituents into the retina as a ... Read More »

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