Similasan Computer Eye Relief, 0.33 fluid ounce (10 mL) dropper bottle. Homeopathic eye drops that help your eyes feel refreshed by stimulating the bodys natural ability to temporarily relieve the symptoms of minor eye fatigue such as tired, aching eyes, strained eyes, burning, and redness. No vasoconstrictors. 100% natural active ingredients: Conium maculatum 6X, Natrium muriaticum 6X, Ruta graveolens 6X, Senega officinalis 6X.