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Search: Posts Made By: Frontal
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Forum: Medical & Health
22nd Jan 2014, 14:06
Replies: 458
Views: 284,460
Posted By Frontal

Essilor used to make a varifocal with an upper...

Essilor used to make a varifocal with an upper segment at the top of the lens that used to be called "pilot" for obvious reasons.

Nowadays the only suitable lens is a double D trifocal.
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