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Author: Edward A. Boettner
Publisher:
ISBN:
Category : Infrared radiation
Languages : en
Pages : 60
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Book Description
The spectral transmittance of ultraviolet, visible, and near infrared light through the ocular media of humans has been measured. Using freshly enucleated eyes, the transmittances of each component part (cornea, aqueous humor, lens, vitreous humor) were determined for the wavelength range from 0.22 to 2.8 microns. To date 9 eyes have been measured, ranging in age from 4 weeks to 75 years. Two types of measurements were made: the first to measure the total light transmitted (direct and scattered) at each wavelength and the second to measure the percent transmittance of that light passing directly through the various media without absorption or scattering. The results show that: (a) the transmission of ultraviolet radiation decreases with the age of the eye; (b) the transmission of infrared radiation appears to be independent of the age; and (c) the maximum total transmittance of the whole eye, about 81 percent, is obtained in the region from 600 to 850 millimicrons.
Author: Edward A. Boettner
Publisher:
ISBN:
Category : Infrared radiation
Languages : en
Pages : 60
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Book Description
The spectral transmittance of ultraviolet, visible, and near infrared light through the ocular media of humans has been measured. Using freshly enucleated eyes, the transmittances of each component part (cornea, aqueous humor, lens, vitreous humor) were determined for the wavelength range from 0.22 to 2.8 microns. To date 9 eyes have been measured, ranging in age from 4 weeks to 75 years. Two types of measurements were made: the first to measure the total light transmitted (direct and scattered) at each wavelength and the second to measure the percent transmittance of that light passing directly through the various media without absorption or scattering. The results show that: (a) the transmission of ultraviolet radiation decreases with the age of the eye; (b) the transmission of infrared radiation appears to be independent of the age; and (c) the maximum total transmittance of the whole eye, about 81 percent, is obtained in the region from 600 to 850 millimicrons.
Author: Samih Tarabichi
Publisher:
ISBN:
Category : Ultraviolet radiation
Languages : en
Pages : 120
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Book Description
Author: Edward A. Boettner
Publisher:
ISBN:
Category : Infrared radiation
Languages : en
Pages : 0
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Book Description
The spectral transmittance of ultraviolet, visible, and near infrared light through the ocular media of humans has been measured. Using freshly enucleated eyes, the transmittances of each component part (cornea, aqueous humor, lens, vitreous humor) were determined for the wavelength range from 0.22 to 2.8 microns. To date 9 eyes have been measured, ranging in age from 4 weeks to 75 years. Two types of measurements were made: the first to measure the total light transmitted (direct and scattered) at each wavelength and the second to measure the percent transmittance of that light passing directly through the various media without absorption or scattering. The results show that: (a) the transmission of ultraviolet radiation decreases with the age of the eye; (b) the transmission of infrared radiation appears to be independent of the age; and (c) the maximum total transmittance of the whole eye, about 81 percent, is obtained in the region from 600 to 850 millimicrons.
Author: Morri Dave Hartgraves
Publisher:
ISBN:
Category : Ultraviolet radiation
Languages : en
Pages : 198
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Book Description
Author: Charles Sheard
Publisher: Createspace Independent Publishing Platform
ISBN:
Category : Eyeglasses
Languages : en
Pages : 96
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Book Description
Transmission of radiant energy by ophthalmic glasses : Being an Essay Contributed to the American Encyclopedia of Ophthalmology (1921)
Author: Donald G. Pitts
Publisher:
ISBN:
Category : Electron microscopy
Languages : en
Pages : 80
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Book Description
An argon gas forced transpiration arc (FTA) source used to produce a high intensity 180 nm to above 2.5 micron continuous spectrum was described. Calibration technics, monitoring instrumentation and procedures for studying the effects of ultraviolet on the eye were presented. An ultraviolet space energy profile was composed using data from rocket flights. (Author).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 46
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Book Description
The spectral transmittance of ultraviolet, visible, and near infrared light through the eye of humans and monkeys was measured. Using freshly enucleated eyes, the transmittances of each component part (cornea, aqueous humor, lens, vitreous humor, retina and choroid) were determined for the wavelength range from 0.22 to 2.8 microns. Two types of measurements were made: the first to measure the total light transmitted (direct and scattered) at each wavelength and the second to measure the percent transmittance of that light passing directly through the various media without absorption or scattering. The results show that: (a) the transmission of ultraviolet radiation decreases with the age of the eye; (b) the transmission of infrared radiation appears to be independent of the age; and (c) the maximum total transmittance of the whole eye, about 83%, is obtained in the region from 600 to 850 millimicrons. The spectral reflectance of the fundus and sclera of the rhesus monkey was measured, with the former reflecting less than 2% in the visible but increasing to 20% in the infrared (1200 millimicrons). The sclera reflects 20 to 30% through the visible and infrared out to 1200 millimicrons. The forward scattered light outside of 1 degree as measured on the whole human eye was 35% plus or minus 5% at 566 and 666 millimicrons.
Author: Donald G. Pitts
Publisher:
ISBN:
Category : Eye
Languages : en
Pages : 126
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Book Description
Author: United States. Occupational Safety and Health Administration
Publisher:
ISBN:
Category : Industrial hygiene
Languages : en
Pages : 464
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Book Description
Author: Hillel Don Lazarus
Publisher:
ISBN:
Category : Eye
Languages : en
Pages : 520
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Book Description
