The On-Line Museum and Encyclopedia of Vision Aids.
|Who developed the four lens spectacles hinged on the outer sides, 1797?|
|Who created the first painting with spectacles worn by a famous person?|
|Who patented the spring mechanism for the lorgnette in 1825?|
|Who devised "Visual Glasses" to cut down light entering the eye?|
|Who invented the double hinge extension to the sidearm circa 1752?|
|Who devised the first bifocal in London in the 1760s?|
|Who probably devised and then first advertised the first temple sidearm circa 1714-1727?|
|Who was the spectacle maker who began a five generation business in Philadelphia in 1799?|
|Who received the first spectacle patent for double specs hinged above in 1783?|
|Who invented "patent" spectacles to adjust for pupil separation in 1797?|
Choose from the answers below. The questions must be answered in order from 1 to 10.
Just enter the letter corresponding to the answers below for your response.
|James Ayscough||John McAllister Sr.||Dudley Adams||John Richardson||Tommaso da Modina|
|Addison Smith||Benjamin Martin||Edward Scarlett||Robert Bate||Benjamin Franklin|