All About Vision web site.
National Eye Institute web site.
World Health Organization ophthalmological web site.
Medscape web site: "Preservative-Free Eye Drops in Multiusage Containers Are at Risk of Contamination."
MedicineNet web site: "Pink Eye (Conjunctivitis)."
FDA web site.
American Academy of Ophthalmology web site.
American College of Allergy, Asthma & Immunology/Medem web site.
Digital Journal of Opthalmology web site.
International Society for Refractive Surgery/American Academy of Ophthalmology web site.
Drugs.com web site.
Gimbel Eye Centre web site.
Drug-Rehabs web site.
Medscape web site: "Ophthalmic Medications in Pediatric Patients."
Medical News Today web site: "Risk of Glaucoma in Patients With Elevated Eye Pressure Can Be Predicted by Model," "Lazy Eye Treatment Beyond Patches and Daily Drops," "Expert Develops Nanoparticle Drug Delivery Method to Replace Eye Drops," "Delivery Improvements of the AMD-drug Lucentis on the Way."
LiveScience web site.