Its miles to earlier to consider exchange,take it from me whos had same proceeder,for starter it took 9 months to see a big difference with halos and glares and starburst,and upto 12months for them to disappear nearly completely,as for the vision, imy
vision was blurry up to 4 months,before i notice a big differnce,but them 6 -7 months for
vision to go sharp..