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Nicholas Harold Lloyd Ridley
Sir Nicholas Harold Lloyd Ridley (10 July 1906 – 25 May 2001) was an English ophthalmologist who invented the intraocular lens and pioneered intraocular lens surgery for cataract patients. Early years Nicholas Harold Lloyd Ridley was born in Kibworth Harcourt, Leicestershire, the son of Nicholas Charles Ridley and his wife Margaret, née Parker; he had a younger brother, Olden. Harold had a stammer which he was largely able to manage. As a child he met and sat on the lap of Florence Nightingale, a close friend of his mother. He was educated at Charterhouse School before studying at Pembroke College, Cambridge from 1924 to 1927, and completed his medical training in 1930 at St Thomas' Hospital. Subsequently, he worked as a surgeon at both St Thomas' and Moorfields Eye Hospital in London, specialising in ophthalmology. In 1938 Ridley was appointed full surgeon and consultant at Moorfields Hospital and later appointed consultant surgeon in 1946. Cataract operations and intraocu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kibworth
Kibworth is an area of the Harborough District, Harborough district of Leicestershire, England, that contains two civil parishes in England, civil parishes: the villages of Kibworth Beauchamp and Kibworth Harcourt . At the 2011 census, Kibworth Beauchamp had a population of 5,433 and Kibworth Harcourt 990. The villages are divided by the Midland Main Line. Kibworth is close to Foxton Locks, Market Harborough, and Leicester. History In 1270 Walter de Merton, the founder of Merton College, Oxford, bought a large part of the parish of Kibworth Harcourt from Saer de Harcourt, who had been forced to sell the estate after giving his support to the unsuccessful "Second Barons' War" led by Simon de Montfort, 6th Earl of Leicester, Simon de Montfort. Much of the parish has remained the property of Merton College, Oxford to the present day. There is a stained-glass window depicting Walter de Merton in the bell tower of the parish church, St Wilfrid's, of which the warden and scholars o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accra
Accra (; tw, Nkran; dag, Ankara; gaa, Ga or ''Gaga'') is the capital and largest city of Ghana, located on the southern coast at the Gulf of Guinea, which is part of the Atlantic Ocean. As of 2021 census, the Accra Metropolitan District, , had a population of 284,124 inhabitants, and the larger Greater Accra Region, , had a population of 5,455,692 inhabitants. In common usage, the name "Accra" often refers to the territory of the Accra Metropolitan District as it existed before 2008, when it covered .Sum of the land areas of Accra Metropolitan District, Ablekuma Central Municipal District, Ablekuma North Municipal District, Ablekuma West Municipal District, Ayawaso Central Municipal District, Ayawaso East Municipal District, Ayawaso North Municipal District, Ayawaso West Municipal District, Korle Klottey Municipal District, Krowor Municipal District, La Dadekotopon Municipal District, Ledzokuku Municipal District, and Okaikoi North Municipal District, as per the 2021 ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ghana
Ghana (; tw, Gaana, ee, Gana), officially the Republic of Ghana, is a country in West Africa. It abuts the Gulf of Guinea and the Atlantic Ocean to the south, sharing borders with Ivory Coast in the west, Burkina Faso in the north, and Togo in the east.Jackson, John G. (2001) ''Introduction to African Civilizations'', Citadel Press, p. 201, . Ghana covers an area of , spanning diverse biomes that range from coastal savannas to tropical rainforests. With nearly 31 million inhabitants (according to 2021 census), Ghana is the List of African countries by population, second-most populous country in West Africa, after Nigeria. The capital and List of cities in Ghana, largest city is Accra; other major cities are Kumasi, Tamale, Ghana, Tamale, and Sekondi-Takoradi. The first permanent state in present-day Ghana was the Bono state of the 11th century. Numerous kingdoms and empires emerged over the centuries, of which the most powerful were the Kingdom of Dagbon in the north and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onchocerciasis
Onchocerciasis, also known as river blindness, is a disease caused by infection with the parasitic worm ''Onchocerca volvulus''. Symptoms include severe itching, bumps under the skin, and blindness. It is the second-most common cause of blindness due to infection, after trachoma. The parasite worm is spread by the bites of a black fly of the ''Simulium'' type. Usually, many bites are required before infection occurs. These flies live near rivers, hence the common name of the disease. Once inside a person, the worms create larvae that make their way out to the skin, where they can infect the next black fly that bites the person. There are a number of ways to make the diagnosis, including: placing a biopsy of the skin in normal saline and watching for the larva to come out; looking in the eye for larvae; and looking within the bumps under the skin for adult worms. A vaccine against the disease does not exist. Prevention is by avoiding being bitten by flies. This may include the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Army Medical Corps
The Royal Army Medical Corps (RAMC) is a specialist corps in the British Army which provides medical services to all Army personnel and their families, in war and in peace. The RAMC, the Royal Army Veterinary Corps, the Royal Army Dental Corps and Queen Alexandra's Royal Army Nursing Corps form the Army Medical Services. History Origins Medical services in the British armed services date from the formation of the Standing Regular Army after the Restoration of Charles II in 1660. Prior to this, from as early as the 13th century there are records of surgeons and physicians being appointed by the English army to attend in times of war; but this was the first time a career was provided for a Medical Officer (MO), both in peacetime and in war. For much of the next two hundred years, army medical provision was mostly arranged on a regimental basis, with each battalion arranging its own hospital facilities and medical supplies. An element of oversight was provided by the appointment ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Britain
The Battle of Britain, also known as the Air Battle for England (german: die Luftschlacht um England), was a military campaign of the Second World War, in which the Royal Air Force (RAF) and the Fleet Air Arm (FAA) of the Royal Navy defended the United Kingdom (UK) against large-scale attacks by Nazi Germany's air force, the Luftwaffe. It was the first major military campaign fought entirely by air forces."92 Squadron – Geoffrey Wellum." ''Battle of Britain Memorial Flight'' via ''raf.mod.uk.''. Retrieved: 17 November 2010, archived 2 March 2009. The British officially recognise the battle's duration as being from 10 July until 31 October 1940, which overlaps the period of large-scale night attacks known as |
Food And Drug Administration
The United States Food and Drug Administration (FDA or US FDA) is a List of United States federal agencies, federal agency of the United States Department of Health and Human Services, Department of Health and Human Services. The FDA is responsible for protecting and promoting public health through the control and supervision of food safety, tobacco products, caffeine products, dietary supplements, Prescription drug, prescription and Over-the-counter drug, over-the-counter pharmaceutical drugs (medications), vaccines, biopharmaceuticals, blood transfusions, medical devices, electromagnetic radiation emitting devices (ERED), cosmetics, Animal feed, animal foods & feed and Veterinary medicine, veterinary products. The FDA's primary focus is enforcement of the Federal Food, Drug, and Cosmetic Act (FD&C), but the agency also enforces other laws, notably Section 361 of the Public Health Service Act, as well as associated regulations. Much of this regulatory-enforcement work is not d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wills Eye Hospital
Wills Eye Hospital is a non-profit eye clinic and hospital in Philadelphia, Pennsylvania. It was established in 1832 and is the oldest continually operating eye-care facility in the United States. It is the ophthalmology residency program for Thomas Jefferson University. Since 1990, Wills Eye Hospital has consistently been ranked one of the top three ophthalmology hospitals in the United States by '' U.S. News & World Report'' and its ophthalmology residency program is considered one of the most competitive residency programs in the world. History James Wills Jr., a Quaker merchant, was instrumental in the founding of Wills Eye through his bequest of $116,000 in 1832 to the City of Philadelphia. Wills stipulated that the funds were to be used specifically for the indigent, blind, and lame. Over the years it evolved into solely an eye hospital. The first Wills Hospital opened in 1834 on Logan Square at 18th & Race Streets. Early surgeons at Wills Eye included Isaac Parrish, M. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rayner (company)
Rayner designs and manufactures intraocular lenses and proprietary injection devices for use in cataract surgery. With Sir Harold Ridley, they were pioneers in the field from 1949 when Ridley successfully implanted the first intraocular lens (IOL) at St Thomas' Hospital, London. The origin of the company The story of the Rayner Company begins in 1910, when Mr John Baptiste Reiner and Mr Charles Davis Keeler opened their first optician's shop at No 9, Vere Street, London, England. They registered their company as Reiner & Keeler Ltd on 30 October 1910. Before forming the company, J.B. Reiner had completed an apprenticeship in 'the art of an optician and scientific instrument maker' in 1891 and had gone on to work for E.B. Merrowitz Ltd, a branch of a well-known American optical company. In 1915, during the First World War, the company name was changed to Rayner & Keeler Ltd. This was almost certainly a commercial decision of the time as J. B. Reiner retained his name all his lif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imperial Chemical Industries
Imperial Chemical Industries (ICI) was a British chemical company. It was, for much of its history, the largest manufacturer in Britain. It was formed by the merger of four leading British chemical companies in 1926. Its headquarters were at Millbank in London. ICI was a constituent of the FT 30 and later the FTSE 100 indices. ICI made general chemicals, plastics, paints, pharmaceuticals and speciality products, including food ingredients, speciality polymers, electronic materials, fragrances and flavourings. In 2008, it was acquired by AkzoNobel, which immediately sold parts of ICI to Henkel and integrated ICI's remaining operations within its existing organisation. History Development of the business (1926–1944) The company was founded in December 1926 from the merger of four companies: Brunner Mond, Nobel Explosives, the United Alkali Company, and British Dyestuffs Corporation. It established its head office at Millbank in London in 1928. Competing with DuPont a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perspex
Poly(methyl methacrylate) (PMMA) belongs to a group of materials called engineering plastics. It is a transparent thermoplastic. PMMA is also known as acrylic, acrylic glass, as well as by the trade names and brands Crylux, Plexiglas, Acrylite, Astariglas, Lucite, Perclax, and Perspex, among several others ( see below). This plastic is often used in sheet form as a lightweight or shatter-resistant alternative to glass. It can also be used as a casting resin, in inks and coatings, and for many other purposes. Although not a type of familiar silica-based glass, the substance, like many thermoplastics, is often technically classified as a type of glass, in that it is a non-crystalline vitreous substance—hence its occasional historic designation as ''acrylic glass''. Chemically, it is the synthetic polymer of methyl methacrylate. It was developed in 1928 in several different laboratories by many chemists, such as William Chalmers, Otto Röhm, and Walter Bauer, and first brought ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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