Medical term:

troland



Tro·land

(trō'lănd),
L.T., U.S. physicist, 1889-1932. See: troland.

tro·land

(trō'lănd),
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

Troland

A 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

troland 

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


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