This afternoon I went to the feed mill that makes my mineral. I had a very informative meeting with the manager. At his suggestion, I am upping the CTC and Vitamin A in my mineral. Vitamin A is sensitive to heat, sunlight and humidity. I also wasn't adding enough CTC to bring my mineral to a preventative level. Vitamin A is essential for eye health. It should be supplied through green grass but as bad as my pink eye is, something isn't working. Short term, I'll bump these two and hope for positive results.