As compared with baseline , overall recession at six months was reduced from 2.35 + / - 0.35 mm to 1.98 + / - 0.55 mm ( p < 0.001 ) in the PT group and from 2.26 + / - 0.31 mm to 1.90 + / - 0.45 mm ( p < 0.001 ) in the MT group .
