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A foveal cone densitometer was built for measuring the kinetics of foveal cone pigments in human eyes. The light from a 500-W xenon lamp was divided into reference, measuring, and bleaching beams, and projected through an optical fiber leading to a modified fundus camera. After the light was projected into the ocular fundus, the reflected light (central 1 degree) was measured by a photomultiplier and the regeneration time and the two-way density were abstracted from the records. The two-way density, which is the decadic logarithm of the measuring-reference beam ratio under bleached conditions divided by the measuring-reference beam ratio under dark conditions, eliminated the artifacts caused by eye movement of blink. Reliable curves were obtained in 45 eyes out of 53 healthy Japanese subjects (age range, 9 to 82 years). The mean +/- standard deviation SD of the two-way density (log) and the time constant (sec) were 0.34 +/- 0.09 and 139.9 +/- 79.3, respectively. The time constant significantly increased with aging.
A Saito, and
Y Miyake, and
J X Wang, and
K Yagasaki, and
Y Matsumoto, and
N Horio, and
M Horiguchi
February 1987,
American journal of ophthalmology,
A Saito, and
Y Miyake, and
J X Wang, and
K Yagasaki, and
Y Matsumoto, and
N Horio, and
M Horiguchi
June 1987,
Investigative ophthalmology & visual science,
A Saito, and
Y Miyake, and
J X Wang, and
K Yagasaki, and
Y Matsumoto, and
N Horio, and
M Horiguchi
May 2008,
Investigative ophthalmology & visual science,
A Saito, and
Y Miyake, and
J X Wang, and
K Yagasaki, and
Y Matsumoto, and
N Horio, and
M Horiguchi
January 1986,
Vision research,
A Saito, and
Y Miyake, and
J X Wang, and
K Yagasaki, and
Y Matsumoto, and
N Horio, and
M Horiguchi
November 2011,
Vision research,
A Saito, and
Y Miyake, and
J X Wang, and
K Yagasaki, and
Y Matsumoto, and
N Horio, and
M Horiguchi
October 2022,
Investigative ophthalmology & visual science,
A Saito, and
Y Miyake, and
J X Wang, and
K Yagasaki, and
Y Matsumoto, and
N Horio, and
M Horiguchi
January 1989,
Vision research,
A Saito, and
Y Miyake, and
J X Wang, and
K Yagasaki, and
Y Matsumoto, and
N Horio, and
M Horiguchi
March 1998,
Journal of neuro-ophthalmology : the official journal of the North American Neuro-Ophthalmology Society,
A Saito, and
Y Miyake, and
J X Wang, and
K Yagasaki, and
Y Matsumoto, and
N Horio, and
M Horiguchi
May 2014,
Biochimica et biophysica acta,
A Saito, and
Y Miyake, and
J X Wang, and
K Yagasaki, and
Y Matsumoto, and
N Horio, and
M Horiguchi
February 2022,
Investigative ophthalmology & visual science,
