For the temporary relief of burning and irritation due to dryness of the eye and for use as a protectant against further irritation. For the temporary relief of discomfort due to minor irritations of the eye or to exposure to wind or sun. For mild/moderate dry eye. POLYQUAD, a safe and comfortable preservative, is gentle enough for even sensitive eyes. Tears Naturale II POLYQUAD Lubricant Eye Drops is recommended by doctors to help patients avoid benzalkonium chloride (BAC).