I'd go with the medical one. Your body doesn't change with magick, only diet and health. You can increase your health by taking care of body/mind/spirit but nothing special, you'll just be super healthy.
But that eye thing sounds pretty serious! If it was just someone clairvoyant (able to see spirits/energy) seeing that, then it would be different, and I would consider a possible walk in being noticed, but if your eyes are physically changing...no bueno.
My eyes and hair have changed color over my lifetime. But it's just the color and its a normal occurrence with my family. We are born blonde, become brunettes and die with jet black hair with maybe some silver here and there. I was born with grey eyes that turned blue, then hazel, now green. My daughter was born with grey eyes that turned hazel and now brown. Its a weird gene I'll tell ya! But this happens very gradually over months to years and as I said, its perfectly normal for my family and they all live long healthy lives. However no eye shape changes. 0.o