Like "I don't know that it causes pain, but changing pressure in you eye may be a cause for pain and diabetes can be a contributing factor to that. What you might want to do is have your eyes examined to see what might be going on inside that you can't see. I just had my exam done and shared with the community how they can photograph your eye to see what is going on. http://www.diabeticconnect.com/discussions/16943-i-ve-got-my-eye-on-you Do you have blurry vision or floaters in you eyes? Those are signs of high sugar as well."