Visa stamp smudged

I am an International student and I recently had my passport in my side pocket and was on a workout routine and noticed that the passport got wet. The USA visa for F1 is seen clear but the immigration stamps got smudged. I am not sure what is the corrective thing to do. Is it fine to travel or should I apply for a new passport and go back to India and get another visa? Please help me on this one.
 
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