#6 Thyroid Disease 

Your thyroid gland is very small compared to most of the other parts of your body. But it plays an essential role in things like your metabolism and your overall growth, and it can cause problems for you if it’s not producing the proper amount of hormones.

Those people with conditions like hyperthyroidism will many times have protruding eyeballs. They’ll also have retracting eyelids and other small signs that will suggest a thyroid disease.

You could very well visit your optometrist for a routine refraction eye exam only to find that you have an issue with your thyroid. It’s something you’ll want to discuss with your primary doctor right away to get it under control.