And I'm on Restasis, fish oil, and multiple eye drops a day because of dry (and yes, blurry) eyes. I've got Hashimoto's.
My mother, sister and I have Hypothyroid & Hashimotos and YES we all suffer with blurry, dry eyes especially when we are stressed or run down. Doctors told me could be the Australian drought causing dirty wind to get in eyes????? I did have Iritis (inflamation of iris) 5 years ago so they treated my complaint seriously and the eye specialist took a look but all is good. I think dry eyes are related to Thyroid as we all have it in our family, my mother the ony one with itchy eyes she has no thyroid, she had Graves now she is Hypothryroid. I use Refresh Liquigel by Allergen probably an Australian product. Tell your doctor to give you something rather then suffer.
Then I would definitely schedule a visit to the doctor. You do not want Thyroid eye disease. It is awful!
Probably not old age as I am only 26. I have post partum thyroiditis and a history of thyroid disease in my family. High antibody. Never had blurry vision, but now I can't see at all without my glasses. It is driving me crazy!
You could just be dehydrated, but my first graves symptom were dry, groopy eyes and tension in my forehead. Do you have any other symptoms? Increased appetite? Feel jumpy? Tired? Weight loss? family history of thyroid disease? You could always go see your doctor- they have simple ways of testing or just a small blood test. Have a loved one watch your eyes as you follow their finger up and down, if you eyelid lags behind the top of your eyeball it's eyelid lag and a sigh of graves disease. Or again it could just be *sigh* old age leading to dry eyes.