Swiss ophthalmologist, born in 1891, died in 1968. Marc Amsler is a student at Jules Gonin of the University of Lausanne and a representative of Gonin's idea of retinal detachment repair. He succeeded Gonin as a professor of ophthalmology at Lausanne in 1935 and became a professor at the University of Zurich in 1944. He is a pioneer in the study of uveitis aqueous humor and is interested in monitoring the symptoms of the macula in retinal diseases. Amsler's sign: bleeding from applanation tonometry and cataract Fuch's metachromatic iridocyclitis (FHI) surgery. It was once considered a feature of FHI and was previously used as a diagnostic and validation test for patients with suspected FHI.