I see black dot whenever see, in my left eye. I have been wearing specs for 6 years. The vision power in the left eye gradually decreasing. I could feel it. When I focused on seeing an object, the right eye lies with the object and left eye ball slightly moves other side of the object (the people told me this). I don't know how its been called. I doubt this might be a reason for the appearance of black dot. I have this problem for about 5 years. I have diagnosed for it before 2 years the doctors told its possible to cure it through eye exercises and later they told that I should under go an operation. But I didn't go for an operation. Now I fear that I might loss my vision power. Suggest me what I should do?