DEAR DR. DEADY: Your letter and inclosed article on “The Maddox Rod
or Phorometer; Which?” has been received and examined with interest.
I have examined a good many cases in my office by both methods and
find variable results, but where there is a radical difference I
have found the Maddox rod the more accurate, and from experience I
have learned to rely upon it instead of the phorometer, as in
prescribing prisms in hyperphoria in connection with glasses for
constant use I rely wholly upon the rod test.