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Visible centre-controlled solid downcurve bifocal lens
OPHTHALMIC LENSES
bifocal lens
20th c.
glass
1999.5517
OPHTHALMIC LENSES
bifocal lens
20th c.
glass
Visible centre-controlled solid downcurve bifocal lens. Upswept PRO-shape. Base-in prism in near portion only.
1999.5517