It seems to be weird but yes, depression moods can certainly cause blurred vision as a matter of fact. Depression could give rise to a decrease in your health condition, thus the eye nerves and eye pressure will be affected, which could lead to some bad feelings including blurred vision. Therefore, controlling your emotion, making it stay stable is very important. And if you are in depression, getting enough rest, do something that gives you pleasure and ask your doctor if the situation is serious, he will definitely get you out of this trouble.