Ophthalmic pathologies include eyesight-threatening conditions (diabetic retinopathy, glaucoma, cataract, age-related macular degeneration and retinal detachment) and, relatively speaking, less serious eye conditions (dry eye, red eye, etc.), all of which are treated by ocular injections, eyedrops or surgery. Eyedrops are primarily used for glaucoma, dry eye disease (DED), conjunctivitis and allergy. Fanny Sellier of Nemera explains why, for chronic diseases, when daily treatments are needed, preservative-free formulations are key to protecting the patient’s ocular surface, as preservatives can cause allergic reactions and irritations, and can even damage patients’ eyes.