Hi Mother1991, Here is a cool picture of thinning of the iris. See where the light is reflecting back through the iris to your left? It looks pinkish-orange because it is bouncing off of the orangish retina/choroid and you are seeing the light reflect back at you. You don’t have thinning of the iris!
http://www.ophthalmicphotography.info/website/slit lamp/atrophy.html