Hi there. I'm looking for help please. I was diagnosed last year and am on 75mg of levothyroxine though not feeling any better. I'm awaiting my latest results as I type but my problem is this. One of my symptoms is dry sore eyes which I take drops for 3 X daily. I work in a school and the teacher directed the children to look at the red text on the board today but I could only see blue and black text. The teacher then went on to type some more blue, which I could see and then highlighted it to change it to red. Whilst highlighted I could see it was red but when she clicked off the highlight it looked more black though I knew it was red? My eyes have been deteriorating over the past few years resulting in me having to wear glasses due to astigmatism which I never knew I had. Should I be worried?