The answer is yes, there is a real example, one of my friend got pink eyes several weeks ago, then she went to the hospital, the doctor do some check stuff on her eyes, then came out a conclusion--infection by the eyelash extensions.
Then my friend went home then throws all the eyelash extensions into dust bin immediately. Then she went to a beauty center to consult about this issue. A consultant tell her, her method of using eyelash extensions is not right, and suggested her to use some high-quality extensions with right steps without any touch with the eye. They are so sensitive.