Eyes get red around the perimeter of pupils when contacts are worn? What causes this and how treated

Bad sign. It means your cornea is getting inflamed. Your lenses may be too tight. Go back to your eye doctor and stop wearing the lenses.
See eye care doc. If the white part around the eye gets red with contact lens wear, this may be a problem such as poor fitting, extended wear with too low an oxygen contact, contact lens solution allergies, early infection or inflammation in the eye, seasonal allergies, dry eye, etc. Recommend an eye exam with your eye care provider.