Optician more important and dignified. Far-sighted or aging colonial Americans imported spectacles from Europe. Spectacles were primarily for the affluent and literate colonists, who required a valuable and precious appliance. Benjamin Franklin in the 1780s developed the bifocal. Bifocal lenses advanced little in the first half of the 19th century. The terms bifocal and trifocal were introduced in London by John Isaac Hawkins, whose trifocals were patented in 1827. In 1884 B. M. Hanna was granted patents on two forms of bifocals which become commercially standardized as the "cemented" and "perfection" bifocals. Both had the serious faults of ugly appearance, fragility,
Quartier des spectacles adjacent to the Théâtre du Nouveau Monde, was the second building in Canada to obtain the LEED Platinum sustainable building certification . The district includes the Louis Bohème, a 28-storey condo tower designed also by LeTourneux. The tower was approved despite objections from Montreal International Jazz Festival president Alain Simard. In the fall of 2017, the National Film Board of Canada is scheduled to move its headquarters to Montreal's Quartier des spectacles, in a new building being constructed by the city of Montreal, adjacent to the Place des festivals square. The NFB will occupy the first four floors of the