Carl von Hess's Human Design Chart

5/2 Ego Manifested Manifestor

German ophthalmologist, known for his work in ocular physiology, whose name is associated with the “Hess afterimage”, defined as a positive afterimage that occurs third in the series of afterimages that are the result of exposure to a brief light stimulus. The Hess afterimage is defined as a physiological illusion. There are also several surgical instruments that are named after him.
He made significant contributions in his studies of refraction and accommodation of the eye. He also conducted research on color vision in the various retinal zones, on the various forms of color blindness, of simultaneous contrast, on afterimages of moving objects and of light-dark adaptation. In addition, he performed comparative physiological studies on light sense and color vision involving animals, in invertebrates as well as vertebrates. Along with Paul Römer, he made the discovery that trachoma is transmissible to monkeys.
He died on 28 June 1923 in Possenhofen, aged 60.
Link to Wikipedia biography

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