I have a problem with my left eye. I can only see through the bottom 'half' of it. I would describe it as if somebody has put a circular sticker on my eyebrow and the bottom half of that sticker is covering the top half of my eye. If i close my right eye and i can make out a definite line where everything below is fine but everything above is very dark, so dark in fact that the lines text as i write this are just a blur.. Also in that dark area straight lines appear to be curved so that the centre of the line appears to be lower than the ends.
I think i have had this problem for a few months but never really took any notice of it until just recently. I do wear glasses for short sightedness but have never had any other problems with my vision until now. I'm also a healthy 27 year male.