What are the effects of ION?

When blood flow to the optic nerve is reduced or blocked, the nerve is deprived of oxygen and nutrition. Without sufficient oxygen and nutrition, the nerve cannot function properly and will eventually die. The amount of vision loss depends on how much and how long the optic nerve was deprived of oxygen and nutrition.
Vision loss from ION is usually permanent. Complete loss of vision is rare; even people with severe ION retain some useful side vision. 

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.