I-DEFENCE® is a preservative-free, lubricating eye ointment designed to provide long-lasting relief for severe chronic dry eye and symptoms of lagophthalmos. Formulated with 0.40% sodium hyaluronate, it hydrates, protects, and reduces tear film evaporation with extended contact time on the ocular surface. Ideal for nighttime use, it soothes irritation and discomfort, forming a moisture barrier while you sleep.