My eyes have been red for a long time. What causes red eyes? I have worn contacts for about a year and everytime they were red, I used Naphcon. I've been using Naphcon for about 1/2 a year with my contacts in. Right now, my eyes are in pain quite often and are red a lot. Could it be because I used Naphcon too much? I went to an opthamologist but he said there was nothing wrong and there was no eye infection. I don't know what to do. Also, for some reason my eyes are super dry at night and in the morning. Its like I don't produce enough or any tears all through the night. Please help. What can I do?