Acute retinal necrosis (ARN)

Labelled Diagram of the Eye

Labelled diagram of the structure of the retina

Acute Retinal Necrosis (ARN) is a serious condition of the eye(s) and hence the visual system. It is thought to be due to a viral infection.

As implied by its name, this condition:

  • is "Acute", that is, it may occur and develop quickly and be severe in extent.
  • is "Retinal", that is, it affects the retina of the eye/s.
  • involves "Necrosis", which refers to the death of some or all of the cells forming a particular tissue or organ.

Symptoms of Acute Retinal Necrosis (ARN) may include severe inflammation and damage to the tissues of the retina and associated blood vessels. Haemorrhaging (bleeding) and retinal detachment may also occur.

ARN may affect either or both eyes.

If both eyes are affected it may be called: Bilateral Acute Retinal Necrosis (BARN).

More about Ophthalmology:

This section includes short definitions of many diseases, disorders, and conditions of the eyes and visual system.
For definitions of other terms in this category, choose from the list to the left (but note that this is not a complete/exhaustive list).

Other related pages include

For further information see also our pages of books about ophthalmology.

The following books may also be of interest:

The Aging Eye (Harvard Medical School)
MCQ Companion to the Eye (Textbook)
The Secret of Perfect Vision: How You Can Prevent and Reverse Nearsightedness
What Your Doctor May Not Tell You About(TM) Glaucoma: The Essential Treatments and Advances That Could Save Your Sight

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