I have a c-pap machine which I need and have been wearing all the time. Saturday morning, 4:00a.m., I awoke, with my right eye hurting and watering profusely. Since the Dr. wasn't in on Sunday, I waited until Monday morning, and went back to my sleep specialist, who referred me on to see my optometrist. By this time, the eye was really red, and swelling around the outside of the eye. My optometrist told me I had a large hole in the cornea. He has been trying to get this healed up by putting in a contact the last two days, using drops q 2 hours while awake, and yesterday, I used a steroid drop three times. Today, when I went back, he said the hole is 85% healed, so I was given ointment to put in q 3 hours and go back Friday. My vision is not good in that eye. Everything is blurry. I am hoping that will come back in time. I had been sleeping on my stomach with head to the side. I just want everyone with a c-pap mask to know what can happen. Do you think my vision will come back as good as it was? Also, I really need the mask, but I don't want my eye sight lost because of it.