@bettervision gently pinches a patient's lower eyelid with a surgical tool until a white stringy substance comes oozing out of the ducts.Apparently, it should be yellow in colour and have a more liquid consistency.She says: "This patient has been wearing eyeliner on her waterline since she was a teenager."The reason why doctors do not recommend you wear eyeliner on your waterline is that there are special glands there that produce and extra oil."Dr Brittani explains the oil "should be an olive oil colour and texture" but said her patient's oil "looks more like toothpaste" because of a blockage.She says: "That means that these glands are obstructed and not producing healthy tears."If your tears don't have enough oil in them, the water.
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