Hi sir, My spectacles were broken, so went for a test to an eye doctor. After diagnosis they determined my right eye as -2.0, and left eye as -1.25, 0.5 spherical. My previous eye sight was right and left 1. As I was purchasing spectacles at a local shop after seeing the prescription he told me that sir eye sight can't increase so much. After his testing right eye is -1.5 and left eye is same. The only difference In doctor test the letters shown some have black background shade. The local shop guy proved something by using green red difference test. Do I have to visit some other doctor.