Thomson was a pioneer in the study of refraction. He was much interested in color-blindness and modified Holmgren’s wool-skein test. Himself affected with hypermetropia, he made important investigations on this condit…
Thomson was a pioneer in the study of refraction. He was much interested in color-blindness and modified Holmgren’s wool-skein test. Himself affected with hypermetropia, he made important investigations on this condit…
