Hi. I'm online and happy to answer your question today.
Good news....this is nothing to worry about.
It is called arcus senilis and is a very common condition in folks your age.
In young patients it can sometimes be a sign of elevated blood cholesterol and may prompt the ophthalmologist to do some blood tests. In people over 50ish, however, no workup is needed.
What causes it? It is from a slow, lifelong buildup of fatty material (cholesterol and phospholipids) the the stroma (meat) of the clear part of your eye (cornea). It will not affect your vision, it does not need any treatment and it will not go away.
here is a good article on the topic:
does this make sense to you?
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