Well, generally speaking, when you have depressed mood, it can have some influence on your eyes. For example, when you are depressed and sad, your eye color will turn to light blue and light grey. Also, depression can certainly cause blurred vision. And then, other symptoms, including dizziness, feelings of detachment, hot flashes, chills, and trembling, numbness, and tingling, dry mouth, puffy eyes can occur too. So it can be bad for you. So you need to control your emotion. And letting yourself have a good time is very important, or it will be dangerous to your body, not only to your eyes.