Medical Dictionary
Main Entry:
Lan·dolt ring Pronunciation:
'län-dOlt-"ri[ng] Function:
noun : one of a series of incomplete rings or circles used in some eyecharts to determine visual discrimination or acuity
Landolt, Edmond (1846–1926), French ophthalmologist. Landolt and Louis de Wecker (1832–1906) published from 1880to 1889 a multivolume treatise on ophthalmology that was once considered a definitive work on the subject. Landolt spent his career applying optics in the study of physiology. In addition to devisingthe Landolt ring, he described the histological formation on the outer nuclear layer of the retina.
