For years I have been told that I have a lazy eye . I can see that my left eyes seems to be a bit slower and the eye lid seems to hang a bit lower like a lazy dog. This is not my true concern though. For years I have dealt with a feeling of weakness in and around my left eye and sometimes my body. MANY days I feel as if there is something pulling from behind my eye, causing me to feel tired. I never ever feel as if I have had enough sleep and I have an amazingly hard time concentrating more and more. From time to time I do feel tension behind this eye and twitching has occurred many times which I attributed to lack of sleep and too much caffeine. I want to know what is causing this never ending feeling being tired and inability to concentrate. Thank you for your help.