Diagram illustrating blocked tear ducts in the human eye.

BIOLOGY • BIOMEDICAL ILLUSTRATIONS • BLEPHARITIS • BLOCKADE • BLOCKAGE • BLOCKING • CLOGGED • COLOR IMAGE • COLOUR IMAGE • CONDITION • CONJUNCTIVA • DIAGRAM • DIGITALLY GENERATED IMAGE • DRY • EXOCRINE GLANDS • EYE • EYEBALL • EYEBALLS • EYELID • EYES • EYESIGHT • FRONT VIEW • HORIZONTAL • HUMAN EYES • ILLUSTRATION • ILLUSTRATIONS • INFECTION • INFLAMMATION • IRIS • IRRITATION • LACRIMAL CANAL • LACRIMAL DUCT • LACRIMAL GLANDS • LACRIMAL SAC • LOCK • LOCKING • MEDICAL CONDITION • MEDICAL • MEDICINAL • MEDICINE • MEIBOMIAN GLANDS • NO PEOPLE • OPHTHALMOLOGY • OPTOMETRY • PHYSIOLOGIE • PHYSIOLOGY • PUPIL • SIGHT • SORE EYES • SYMPTOM • TEAR DUCT • TEAR GLANDS • TEXT • VISION • WESTERN SCRIPT • WITHOUT PEOPLE