What Are The Side Effects Of Eutroxsig?

Hi, I have had a thyroidectomy 12 months ago due to cancer, I have had one treatment of radioactive iodine therapy treatment with good results. I am currently taking 300 mcg of Eutroxsig daily. Since the beginning of the thyroid issues I have notice issues with my eyes. I find them sore, itchy, heavy eyelids and my reading vision is diminishing noticeably with blurry vision most of the time. Are there side effects that can cause these symptoms?