This stuff of dry substance is a complex of bacteria and mast cells(mast, immunologically sensitive cells, that aid in innate immunity, and body's first line of defence) that fought together to save your eyes when you were sleeping too deep.It is perfectly normal. It's residue built up throughout the day. You're eyes are constantly cleaning themselves. Also this symptom arise when the eyes are too dry.Your doctor may prescribe 'cyclosporine', a medication approved by the Food and Drug Administration (FDA) for chronic dry eyes.Artificial teardrops are available over the counter such as tear plus.
So I advice you to use this eye drops & if still itis not resolved or you have major discomfort,then consult your Eye doctor.
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