I have been wearing daily disposable contact lenses for four years without any problems. As of eight weeks ago my right eye began to get irritated by the contact lens (left eye is fine). The contact goes in easily however it doesn’t feel quite right. As the day goes on my eye starts to get itchy, at times it stings, and I get a light yellow discharge forming in the corner of my eye. The irritation stops immediately when I take the contact out however when I wake up the next morning I have quite a lot of discharge which forms throughout the night. I have reverted back to glasses and have now been wearing glasses for three weeks straight with no irritation or discharge whatsoever. Yesterday I decided to try the contacts again however as soon as I put the contact back in the same thing happened. I haven’t changed contact lenses (easyvision Umere) and it’s not environmental as I went away on holidays for a few weeks and the problem didn’t clear up.
You may have developed a problem with the cornea, like a corneal erosion, but I would have expected this, or any other minor damage of the cornea, to have cleared up quite quickly when you stopped wearing the lenses. The other condition you may have is a type of conjunctivitis that develops underneath your eyelids. This can persist for much longer and can be helped with some medication. I would advise you to see your contact lens practitioner who should be able to determine the problem.