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Bifocal glasses (physical object)

Known as: Bifocals, bifocal, bifocal lenses 
National Institutes of Health

Papers overview

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Review
2015
Review
2015
Autoimmune pancreatitis is a rare type of chronic pancreatitis. It is supposed to be a pancreatic manifestation of an immune… 
2013
2013
Nas ultimas decadas, varios especialistas tentaram descobrir um termo geral unico para aplicar ao estudo das relacoes entre… 
2006
2006
Bifocal VDT (Visual Display Terminal) operators (50) were studied from different fields (data entry, conversational task… 
2001
2001
ABSTRACT The gene bifocal (bif), required for photoreceptor morphogenesis in the Drosophila compound eye, encodes a protein that… 
1997
1997
Photoreceptor cells of the Drosophila compound eye begin to develop specialized membrane foldings at the apical surface in… 
1991
1991
We evaluated the visual results and success rate with a center-near concentric simultaneous vision bifocal contact lens. Forty… 
1979
1979
Eight experienced U.S. Army aviators performed various maneuvers in an instrumented helicopter to test the relative usability of… 
1939
1939
The author has successfully accomplished his "desire to write a book on clinical refraction, employing the theory of ophthalmic…