Tscherning-Ellipse

См. также в других словарях:

• Marius Tscherning — Marius Hans Erik Tscherning (December 11, 1854 1939) was a Danish ophthalmologist. He studied ophthalmology under Edmund Hansen Grut (1831 1907) in Copenhagen, later becoming an adjunct director at the ophthalmological laboratory at the Sorbonne… …   Wikipedia

• Corrective lens — A bifocal corrective eyeglass lens A pair of contact le …   Wikipedia