What kind of eye injury causes astigmatism?

I (20/M) have minor astigmatism in my right eye.

The only injury i can think of was when a basketball hit my eye area at high speed a few months ago. It left a minor scrape/cut on my eyebrow area, but I do not remember experiencing any eye pain or vision changes after being hit.

On another note, can eye examinations distinguish between genetically and trauma induced astigmatism?

submitted by /u/randomm5678
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