Type size some myopic academics required (4)
I believe the answer is:
pica
'type size' is the definition.
(pica is a unit of size in typography)
'some myopic academics required' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'PICA' is hidden within 'myopic academics required'.
(Other definitions for pica that I've seen before include "Measure" , "Magpie's" , "Printing unit" , "old type" , "Unit of type size" .)