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Thread: VISION THREAD (other than colour vision) 2
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Old 22nd January 2014 | 14:06
  #168 (permalink)  
Frontal
 
Joined: Nov 2012
Posts: 34
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From: Exeter
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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