Leber's Miliary Aneurysm

Leber’s Miliary Aneurysm is an interchangeable term for a mild form of Coat’s Disease. As its name implies, it involves localized dilations, or aneurysms, of blood vessels throughout the retina. Often, there are no symptoms associated with the aneurysms, and the condition is found upon routine examination.

Like macular telangiectasia, it usually affects only one eye and usually occurs in males. The difference is that Leber’s Miliary Aneurysm is present at birth and is very often diagnosed during childhood. Some researchers have suggested that Leber’s Miliary Aneurysm and more severe forms of Coat’s Disease may be caused by a genetic mutation, but this is not known for certain.

Leber’s Miliary Aneurysm will progress to more severe forms of Coat’s Disease, which eventually causes central vision loss and often results in retinal detachment. However, the outcome is more hopeful, because diagnosis was made at Coat’s Disease’s earliest stages. This increases the likelihood that progression of Coat’s Disease will be able to be halted with laser surgery or cryotherapy, because the affected eye will be under continuous observation.

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