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Carl Friedrich Richard Förster (15 November 1825 – 7 July 1902) was a German ophthalmologist born in the town of Lissa (today Leszno, Poland). He received his medical doctorate in 1849, and for most of his career was associated with the University of Breslau. Two of his assistants at Breslau were Hermann Wilbrand (1851–1935) and Hermann Rudolph Aubert (1826–1892).

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  • كارل فريدريك ريتشارد فورستر (ar)
  • Richard Förster (Mediziner) (de)
  • Carl Friedrich Richard Förster (en)
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  • كارل فريدريك ريتشارد فورستر (بالألمانية: Richard Förster)‏ هو طبيب عيون وسياسي ألماني، ولد في 15 نوفمبر 1825 في بولندا، وتوفي في 7 يوليو 1902 في فروتسواف في بولندا. انتخب عضو مجلس النواب البروسي اللوردات. (ar)
  • Richard Förster (* 15. November 1825 in Lissa, Provinz Posen; † 7. Juli 1902 in Breslau) war ein deutscher Ophthalmologe und Hochschullehrer. (de)
  • Carl Friedrich Richard Förster (15 November 1825 – 7 July 1902) was a German ophthalmologist born in the town of Lissa (today Leszno, Poland). He received his medical doctorate in 1849, and for most of his career was associated with the University of Breslau. Two of his assistants at Breslau were Hermann Wilbrand (1851–1935) and Hermann Rudolph Aubert (1826–1892). (en)
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  • كارل فريدريك ريتشارد فورستر (بالألمانية: Richard Förster)‏ هو طبيب عيون وسياسي ألماني، ولد في 15 نوفمبر 1825 في بولندا، وتوفي في 7 يوليو 1902 في فروتسواف في بولندا. انتخب عضو مجلس النواب البروسي اللوردات. (ar)
  • Richard Förster (* 15. November 1825 in Lissa, Provinz Posen; † 7. Juli 1902 in Breslau) war ein deutscher Ophthalmologe und Hochschullehrer. (de)
  • Carl Friedrich Richard Förster (15 November 1825 – 7 July 1902) was a German ophthalmologist born in the town of Lissa (today Leszno, Poland). He received his medical doctorate in 1849, and for most of his career was associated with the University of Breslau. Two of his assistants at Breslau were Hermann Wilbrand (1851–1935) and Hermann Rudolph Aubert (1826–1892). Förster is remembered for conducting tests of visual acuity, and for his investigations of indirect vision (peripheral vision) and visual performance across the visual field together with Hermann Aubert. The linear variation of visual performance that they described is sometimes referred to as the Aubert-Foerster law. From Förster's research, the eponymous terms of "Förster perimeter" and "Förster's shift" are derived. A Förster perimeter was an instrument used to measure an individual's field of vision. He also devised a specialized photometer to determine the smallest amount of light that will permit an object to be visible. In 1871 Förster defined the difference between negative and positive scotoma (blind spot); if vision of the scotoma region is a void, it is a negative scotoma, and if the scotoma is an area of darkness/lightness or composed of hallucinatory patterns, it is called a positive scotoma. (en)
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