Luminosity Functions of Normal, Deuteranomalous, and Deuteranopic Subjects as Determined by Absolute Threshold and CFF Measurements*

William E. Collins

doi:10.1364/JOSA.51.000202

Journal of the Optical Society of America
Vol. 51,
Issue 2,
pp. 202-206
(1961)
•https://doi.org/10.1364/JOSA.51.000202

Luminosity Functions of Normal, Deuteranomalous, and Deuteranopic Subjects as Determined by Absolute Threshold and CFF Measurements

William E. Collins

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William E. Collins, "Luminosity Functions of Normal, Deuteranomalous, and Deuteranopic Subjects as Determined by Absolute Threshold and CFF Measurements*," J. Opt. Soc. Am. 51, 202-206 (1961)

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Abstract

Zegers’ colorimeter, appropriately modified, was employed to determine the spectral sensitivity of one deuteranopic, two deuteranomalous, and two normal subjects. Absolute threshold data were collected using a 25-min field and CFF curves were determined for both 50-min and 100-min fields. The sensitivity relationships among the subjects differed markedly depending upon technique, flicker rate, and field size. The results seem to indicate that the flicker situation provides a kind of information different from that obtained when absolute thresholds or visual acuities are studied. Research directed toward the relationship between flicker and absolute threshold measures of spectral sensitivity may provide important new data bearing on theories of color vision and color defect.

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Wavelength (mμ)
Conditions	Subject	420	440	460	480	500	520	540	560	580	600	620	640	661^a 660	685^a 680
25-min field (absolute threshold)	1	−5.00	−5.27	−5.44	−5.78	−6.13	−6.44	−6.53	−6.56	−6.49	−6.39	−6.18	−5.93	−5.34	−4.71
	2	−5.39	−5.68	−5.82	−6.08	−6.29	−6.46	−6.53	−6.55	−6.47	−6.31	−6.17	−5.85	−5.44	−4.77
	A	−4.80	−4.97	−5.16	−5.44	−5.82	−6.30	−6.47	−6.53	−6.44	−6.33	−6.23	−5.93	−5.39	−4.70
	B	−4.73	−4.86	−4.96	−5.31	−5.82	−6.25	−6.45	−6.53	−6.48	−6.37	−6.12	−5.75	−5.16	−4.53
	Z	⋯	−4.50	−4.66	−5.02	−5.44	−6.09	−6.28	−6.32	−6.29	−6.24	−6.17	−5.78	−5.31	−4.56
50-min field (CFF, 20 cps)	1	⋯	−3.22	−3.61	−3.77	−4.11	−4.42	−4.64	−4.62	−4.62	−4.35	−4.20	−3.81	−3.37	−2.67
	2	−3.36	−3.62	−3.87	−4.05	−4.30	−4.44	−4.51	−4.49	−4.42	−4.25	−4.10	−3.77	−3.28	−2.70
	A	−3.64	−3.89	−4.04	−4.31	−4.75	−4.87	−4.97	−5.00	−5.05	−4.88	−4.71	−4.44	−3.90	−3.30
	B	⋯	⋯	−3.03	−3.41	−3.80	−4.30	−4.48	−4.51	−4.52	−4.35	−4.19	−3.89	−3.35	−2.73
	Z	⋯	−3.16	−3.24	−3.69	−4.11	−4.65	−4.79	−4.85	−4.85	−4.77	−4.57	−4.36	−3.83	−3.18
50-min field (CFF, 30 cps)	1	⋯	⋯	⋯	−2.97	−3.32	−3.43	−3.52	−3.60	−3.58	−3.45	−3.19	−2.72	⋯	⋯
	2	⋯	⋯	−2.75	−2.97	−3.18	−3.36	−3.43	−3.43	−3.34	−3.10	−2.78	⋯	⋯	⋯
	A	⋯	⋯	⋯	−3.06	−3.34	−3.82	−4.04	−4.17	−4.11	−4.02	−3.90	−3.75	−3.31	−2.91
	B	⋯	⋯	⋯	−2.51	−2.81	−3.25	−3.42	−3.44	−3.39	−3.24	−3.05	−2.87	⋯	⋯
	Z	⋯	⋯	⋯	−2.73	−3.06	−3.58	−3.75	−3.89	−3.86	−3.76	−3.55	−3.24	−2.87	⋯
100-min field (CFF, 20 cps)	1	−3.16	−3.33	−3.46	−3.70	−4.05	−4.41	−4.58	−4.63	−4.59	−4.50	−4.20	−3.84	−3.58	−2.72
	2	−3.19	−3.35	−3.59	−3.90	−4.14	−4.31	−4.39	−4.42	−4.39	−4.24	−3.96	−3.65	−3.11	−2.48
	A	−3.31	−3.50	−3.67	−3.88	−4.24	−4.47	−4.69	−4.84	−4.82	−4.58	−4.49	−4.16	−3.82	−3.13
	B	−2.73	−2.98	−3.16	−3.46	−3.78	−4.25	−4.43	−4.40	−4.41	−4.30	−4.09	−3.82	−3.30	−2.64
	Z	−3.07	−3.12	−3.32	−3.73	−4.21	−4.49	−4.68	−4.76	−4.74	−4.54	−4.44	−4.14	−3.68	−3.07
100-min field (CFF, 30 cps)	1	⋯	−2.32	−2.55	−3.05	−3.48	−3.80	−3.97	−4.02	−3.93	−3.67	−3.32	−3.05	−2.71	−2.12
	2	⋯	−2.54	−2.82	−2.97	−3.19	−3.37	−3.40	−3.43	−3.42	−3.19	−2.96	−2.52	−1.99	⋯
	A	⋯	−2.65	−2.81	−2.95	−3.41	−3.87	−3.93	−4.00	−3.88	−3.74	−3.69	−3.27	−2.71	−2.32
	B	⋯	⋯	−2.34	−2.76	−3.04	−3.53	−3.55	−3.67	−3.57	−3.44	−3.25	−3.05	−2.42	−1.82
	Z	⋯	⋯	−2.37	−2.72	−3.09	−3.58	−3.75	−3.78	−3.78	−3.66	−3.49	−3.17	−2.77	−2.17

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Journal of the Optical Society of America