Antique Optical Equipment Phoropter Refracting Instrument This is an antique Phoropter refracting instrument. A phoropter is used by the ophthalmologist and can measure refractive error to determine the correct lens. The patent number and patent date are stamped on the phoropter. It is in good condition! The metal handle can be removed if you would rather have the phoropter alone. Overall it measures approximately 23l x 4w x 11.5h. This is an interesting piece and would look great displayed in your home or office. Any questions, please ask. Reasonable offers will be considered. We have two other phoropter refracting instruments if interested in purchasing another or all. We could work out a great deal. We can also deliver personally within a 50 mile radius for the price of fuel. Antique Optical Equipment DeZeng Phoroptor eye exam eye glasses contacts doctor optometrist vision eyesight nearsighted farsighted steampunk historical vintage medical antique instruments (3002). Camden, New Jersey, USA. Phoropter (Refractor), ophthalmic instrument for the measurement of refractive error and binocular function comprising two circular black enamel cases each holding four rotating discs of positive and negative spherical lenses connected to a central stem with adjusting screws for levelling and interpupillary distance. The central stem is designed for attachment to a floor or wall stand. Attached to the front are: (1) a pair of lens clips for supplementary lenses that are rotatable for cylindrical lenses, (2) a pair of Risley prisms, (3) a pair of Maddox rods and (4) a Stevens’ phorometer. It is engraved on the back MADE IN USA PAT’D 7-18-1922 and on the front DE ZENG STANDARD CO / CAMDEN N J MAKERS. This is a very early refractor designed in 1922. The designer, Henri DeZeng, was a prolific inventor of many eye and ear, nose and throat instruments but his first love was the ophthalmoscope. This is reflected in his many patents. He made the first practical electric ophthalmoscope, the first with a non-corrosive mirror, the first with illuminated lens indicating numbers and the first commercially produced ophthalmoscope with a battery contained in the handle. The list goes on, including being the first to use filters, a rheostat and standard commercial lamps. The DeZeng Company became part of American Optical in the early 1920s: Henry ended his career with a flourish, producing the Professional and the wonderfully named Knickerbocker ophthalmoscopes! The Museum holds a phorometer made by the American Optical Company (Cat # 1053) under a patent held by Henry L DeZeng. It also holds a DeZeng ophthalmoscope (Cat No 907) and a Wellsworth DeZeng retinoscope. The item “1922 PHOROPTER VINTAGE DEZENG STANDARD COMPANY OPTICAL REFRACTOR ANTIQUE” is in sale since Tuesday, January 30, 2018. This item is in the category “Business & Industrial\Healthcare, Lab & Life Science\Medical Specialties\Ophthalmology & Optometry\Lensmeters & Keratometers”. The seller is “ophthalmicequipment” and is located in Alpharetta, Georgia. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, New Zealand, Philippines, Singapore, Switzerland, Norway, Qatar, Kuwait, Bahrain, Croatia.
- Brand: Dezeng Standard Company
- MPN: Does Not Apply
- Country/Region of Manufacture: United States
Posted in phoropter | 
Comments Off | February 3rd, 2018
