Well, first, you should know that eye shingles is an infection caused by the virus that causes chickenpox. And according to some doctors, when it occurs, your eye may become red, swollen, painful, and very sensitive to light. So it will be annoying and painful. For the long term effects, watery eyes and blurred vision may occur too. In common, the rash can spread to the upper or lower eyelids. By the way, you should be careful too, for shingles causes abnormal sensations in the affected part of the body a few days before the rash appears. And you may feel deep pain, itchy, and extreme sensitivity to touch. In my opinion, that can be dangerous.