As long as you meet navigator requirements you can be waived as a pilot. I was 20/100 with -1.75 correction in both eyes and went to UPT.
The more serious discussion would be what guard unit you are applying to. DO NOT SIGN A 10 YEAR COMMITMENT TO ACTIVE DUTY. Find a unit that flies an aircraft you're interested in and bug the crap out of them. If you go active, you WILL wind up in a GCS at some point.
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