I just turned 40, and have been having fits reading...8's and 3's look alike, etc. My eye Dr told me I need bifocals, wound up ordering some no-line progressive lenses, which he says are effectively trifocals. Anybody had any experience adjusting to these lenses? Any advice? I remember my dad being nauseous and almost giving up when he got his old-style "line" bifocals 25 years ago.

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2002 Ford ZX2
2 x 2013 Honda Civics