[raging bull]

When I last changed my bi focals I picked a larger frame than the ones that were being replaced, collected and everything looked o'k till I left the store.
On leaving the store I fell/tripped on edge of kerb, grazed palm of hand and grazed both knees.
Taken back into opticians with assistance there the optician told me the point of graduation was wrong, new lens had to be made to correct problem.
So any problem take them back!