The word Emetropy is misspelled against Emmetropy, a noun meaning "Same as Emmetropia."
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Emmetropy has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings e & etropy which should not be misspelled with single 'M'
Wrong Spelling:  e-m-etropy 
Correct Spelling:  e-mm-etropy 
Find more incorrect spellings of Emmetropy to spell right way.