Would suggest you get a peripheral vision test also known as Visual Field to make sure there is no damage. Reading the letters on the eye chart tests central not peripheral vision. You can ask your neurologist if there is a neuro-ophthalmologist he could refer you to.
JCH MD
Thanks for your reply. I had seen ophthalmologist doctor but .seem no comment from her to improve. Just wonder head injury can affect poeripheral vision, Did any method can seek to improve? Need refer to doctor special in head injury to seek assistance? I'm from Malaysia. Not sure you know any doctor special in this problem to seek help. Actually I did seen some doctor but so far no good comments. Thanks for your advice.
Usually right brain problems like strokes and injuries cause a problem with the peripheral vision on the left side of both eyes. Many people misinterpret this to be a left eye problem and a normal right eye.
That is about all I can tell you without an examination. Since things have changed you need to return to your ophthalmologist for a reexamination.
JCH MD