I am 18 year old male. 90 kgs and 5.9 ft. Mildly overweight. About 2 hours ago I noticed a blue tint on the white part of my eye. Very light. But its there. When I looked online I noticed that brittle bone, hearing deficiency, difficulty swallowing are symptoms of a disease. And there were lots of diseases. I do have hearing deficiency. I feel a slight pressure constantly in my ears and I do sometimes have difficulty swallowing. If I get anxious. And nervous. This is common for me. I also have -ve vision in both my eyes. What could me the cause?