Have a new patient that appears to be wearing a Hoya Array lens and is very happy with it. Nasal markings are "Y75." The 5 indicates 1.67, can anyone explain what the 7 means?
Have a new patient that appears to be wearing a Hoya Array lens and is very happy with it. Nasal markings are "Y75." The 5 indicates 1.67, can anyone explain what the 7 means?
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