Also found in: Dictionary, Acronyms, Encyclopedia, Wikipedia.
L.T., U.S. physicist, 1889-1932. See: troland.
A unit of visual stimulation at the retina equal to the illumination per square millimeter of pupil received from a surface of 1 lux brightness.
Farlex Partner Medical Dictionary © Farlex 2012
TrolandA unit of conventional retinal illuminance, which is used to correct photometric measurements of luminance that fall on the retina by scaling them to the effective pupil size.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
Troland,L.T., U.S. physicist, 1889-1932.
troland - a unit of visual stimulation at the retina equal to the illumination per square millimeter of pupil received from a surface of 1 lux brightness.
Medical Eponyms © Farlex 2012
Unit of retinal illuminance equal to that produced when the luminance of the observed object is one candela per square metre seen through a pupil having an area of one square millimetre. Syn. photon (obsolete). See retinal illuminance.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann