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8. Visual performance of a multi-zone bifocal and a progressive multifocal contact lens. Guillon M; Maissa C; Cooper P; Girard-Claudon K; Poling TR CLAO J; 2002 Apr; 28(2):88-93. PubMed ID: 12054378 [TBL] [Abstract][Full Text] [Related]
9. Objective and subjective assessment of a new diffractive trifocal contact lens. Fulga V; Schroder S; Belkin M Metab Pediatr Syst Ophthalmol (1985); 1996-1997; 19-20():41-4. PubMed ID: 11548785 [TBL] [Abstract][Full Text] [Related]
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