it is normal to have some morning accumulation of fluid or mucous-like substance in the corners of the eye. thinner drainage like tears will drain down the nasolacrimal duct into your nose and not be noticed. the thicker material just can make it through this tiny drainage tube. the eye is always secreting tears and lubrication (from oil-like glands under the eyelid) so this is not really alarming. true pink eye (conjunctivitis) is typically painful and the drainage is copious all day long. allergic conjunctivitis tends to itch and last a long long time. making a self-diagnosis can be difficult so if you are concerned then you can address this problem with your medical provider or even optometrist.
pinkeye. concerning the discharge. i have only the occasional 'crust' from sleeping but do have what appear to be 'strings' of a mucus like substance that forms in my lower eyelid. i frequently just touch it and pull it out. its white in color and seems to not want to go away. i had thought maybe it was from an allergen but i dont have allergies to speak of nor is this a seasonal thing. is this something i should be concerned about?