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Macular oedema Cystoid macular oedema (CMO)

Disease
Macular oedema is a common, sometimes temporary, cause of reduced central vision. It may show:

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? A diffuse pattern of macular thickening and fluid accumulation, with or without associated haemorrhages and exudates (see also Diabetes - macular oedema)

? A cystic accumulation of fluid within the retina, centred around the macula, known as cystoid macular oedema (CMO). CMO occurs in a variety of ocular conditions that increase vascular permeability, thought to arise in some cases due to prostaglandin-mediated inflammation. CMO is more common after surgical complications, for example, posterior capsule rupture with damage to the vitreous

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