For the temporary relief of burning, irritation, and discomfort due to dryness of the eye or exposure to wind or sun. May be used as a protectant against further irritation. Long-lasting hydration to the tear film while also providing lubrication and protection to the ocular surface cells that can become damaged due to Dry Eye. Effectively relieves Dry Eye symptoms that may occur following Lasik surgery. Safe to use as often as needed, so your eyes can feel good - anytime, anywhere. Preservative free. 30 single-use containers.