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Microfilm came about in 1839 and was used as a novelty to produce small texts. It has survived for almost two centuries while being improved and utilized by universities and financial institutions. Microfilm was central to information and espionage during World War II and the Cold War. Today, technology has improved that might... more »
One of the earliest forms of photography, the daguerreotype introduced the world at large to the concept of recording slices of reality. It wasn't long before the daguerreotype was superseded by methods that didn't require the subject to sit, immobile, for hours--and could be touched without damaging the image--but these early efforts... more »
An optician is a licensed health care practitioner who provides lenses for the correction of a refractive error. Corrective lenses may be contact lenses, spectacles lenses, low vision aids or ophthalmic prosthetics to those who are partially sighted. The corrective lenses are mounted either on the eye as contact lenses or mounted in a frame or holder in front of the eye as spectacles or as a monocle.
College of Opticians of British Columbia
Like many health care providers, opticians are regulated professionals. The profession is often regulated by optician specific agencies, as in Canada and some states of the USA, or jointly with optometry such as the New Zealand or the United Kingdom General Optical Council. Opticians usually work independently from an optometrist or ophthalmologist although some opticians may work in a joint practice with other eye care professionals. Opticians convert a prescription for the correction of a refractive error into an ophthalmic lens or some other device, such as reading aids or telescopic lenses.British Columbia Health Professions ActOntario Regulated Health Professions ActNew Zealand Health Practitioners Competence Assurance Act
An optician will consult with a client to design an ophthalmic lens or appliance to best meet their needs. Opticians gather information from the patient on the use of the appliance, their level of activity, the necessity for protection from radiant energy or projectiles, and eye and facial features. In providing services Opticians are required to use a variety of instrumentation; these range from simple measuring devices to complex examination equipment. The list of equipment is often specified in jurisdiction specific Professional Standards of Practice Standards of Pracitice of the College of Opticians of British Columbia and Ontario. The standards of the College of Opticians of British Columbia serve as an example.
Opticians specialize in the design, fitting, and dispensing of e read more at » http://en.wikipedia.org/wiki/Optician
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