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Visible centre-controlled solid downcurve bifocal lens
OPHTHALMIC LENSES
bifocal lens
Emerson-Bentzon
20th c.
glass
1999.5516
OPHTHALMIC LENSES
bifocal lens
Emerson-Bentzon
20th c.
glass
Visible centre-controlled solid downcurve bifocal lens. PRO-shape. Glass. Near optical centre at NYP [?].
1999.5516