Double vision, especially if sudden or acute, is a concerning symptom that should prompt patients to seek care from an optometrist immediately. Double vision indicates an imbalance in the visual system that has to be properly diagnosed. In some cases, simple eyeglasses can help fix the issue and no further treatment is required. However, sudden double vision can be indicative of more serious and potentially life-threatening conditions such as strokes, aneurysms or neurological disorders. If you are experiencing double vision, visit an optometrist immediately for a proper work-up.