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Sunday, July 26, 2020 | History

2 edition of Determination of ocular threshold levels for infrared radiation cataractogenesis found in the catalog.

Determination of ocular threshold levels for infrared radiation cataractogenesis

Donald G Pitts

Determination of ocular threshold levels for infrared radiation cataractogenesis

by Donald G Pitts

  • 195 Want to read
  • 8 Currently reading

Published by Dept. of Health and Human Services, Public Health Service, Center for Disease Control, National Institute for Occupational Safety and Heath, Division of Biomedical and Behavioral Science, for sale by the Supt. of Docs., U.S. Govt. Off. in Cincinnati, Ohio, Washington .
Written in English

    Subjects:
  • Eye -- Accommodation and refraction,
  • Optometry

  • Edition Notes

    StatementDonald G. Pitts, Anthony P. Cullen, Pierrette Dayhew-Barker, University of Houston, College of Optometry
    SeriesNIOSH research report, DHHS publication ; no. (NIOSH) 80-121, DHHS publication -- no. (NIOSH) 80-121
    ContributionsCullen, Anthony P., joint author, Dayhaw-Barker, Pierrette, joint author, National Institute for Occupational Safety and Health. Division of Biomedical and Behavioral Sciences, University of Houston. College of Optometry
    The Physical Object
    Paginationv, 55 p. :
    Number of Pages55
    ID Numbers
    Open LibraryOL14909418M

    Infrared radiation hazard exposure limits for the eye P The avoid thermal injury of the cornea and possible delayed effects upon the lens of the eye (cataractogenesis), ocular exposure to infrared radiation, EIR, over the wavelength range nm to nm, for times less than s, shall not exceed: N/A t ≤ s N/A. Scientific and epidemiological background for radiation risk to the lens of the eye Norman J. Kleiman, Ph.D. For the lens of the eye, the threshold in threshold, if any, for radiation cataractogenesis is critical for risk assessment and exposure guidelines.

    Yu, Z. Damage mechanisms for near-infrared radiation induced cataract. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine 24 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN Purpose: 1) To estimate the threshold dose and the time evolution for cataract induction by. ILT has a selection of systems to measure almost any Optical Radiation Hazard application. ILT meters come with NIST traceable, ISO accredited calibrations in units of Watts, Lumens, Watt/cm 2, lux and foot-candles as well as full spectrum analysis.

      Pitts DG et al () "Determination of ocular threshold levels for infrared radiation cataractogenesis" US Dept. Health and Human Sciences, National Institute for Occupational Safety and Health Publications It is widely accepted that the use of medical imaging continues to grow across the globe as does the concern for radiation safety. The danger of lens opacities and cataract formation related to radiation exposure is well documented in the medical literature. However, there continues to be controversy regarding actual dose thresholds of radiation exposure and whether these thresholds are still Cited by: 9.


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Hudson River, N. Y. -- Hudson to Troy. Letter from the Secretary of War transmitting with a letter from the Chief of Engineers, reports on preliminary examination and survey of Hudson River, N. Y., from Hudson to the dam at Troy, with a view to securing a depth of 27 feet, with suitable width.

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Determination of ocular threshold levels for infrared radiation cataractogenesis by Donald G Pitts Download PDF EPUB FB2

The effects of infrared radiation on rabbit and monkey eyes were tested to establish the ocular threshold exposure values for radiation in the to nanometers (nm) wavelength range necessary to produce cateracts in the crystalline lenses.

A watt lamp was used as the source for the infrared energy. Get this from a library. Determination of ocular threshold levels for infrared radiation cataractogenesis. [Donald G Pitts; Anthony P Cullen; Pierrette Dayhaw-Barker; National Institute for Occupational Safety and Health.

Division of Biomedical and Behavioral Science.]. Title(s): Determination of ocular threshold levels for infrared radiation cataractogenesis/ Donald G. Pitts, Anthony P. Cullen, Pierrette Dayhaw-Barker. Country of Publication: United States Publisher: Cincinnati, Ohio: U.S.

Dept. of Health and Human Services, Public Health Service, Center for Disease Control, National Institute for. Ocular damage was related to the rate of delivery of the IR radiation since the data show that as the irradiance level increases, the radiant exposure threshold decreases.

Exposures for the full spectrum were found to be additive for irradiance levels at 4 W-cm −2 and by: Determination of infrared radiation levels for acute ocular cataractogenesis.

Pitts DG, Cullen AP. One hundred pigmented rabbit eyes and ten primate eyes were exposed to infrared (IR) radiation in the to 1, nm wavelength range and to the full spectrum Cited by: Infrared Radiation and the Eye.

Authors; Authors and affiliations; Per G. Söderberg; Chapter. and Dayhaw-Barker, P.,Determination of ocular threshold levels for infrared radiation cataractogenesis, DHHS (NIOSm Publication No.

NIOSH # Author: Per G. Söderberg. principal investigator with D.G. Pitts. Determination of Ocular Threshold Levels for Infrared Radiational Cataractogenesis. Funded September -August 61, IERI-NIOSH Joint Program, The Effects of Broadband Ultraviolet Exposure to the eye –.

Pitts, D.G. et al () “Determination of ocular threshold levels for infrared radiation cataractogenesis”. US Dept. Health and Human Sciences, National Institute for Occupational Safety and Health Publications 1. Introduction. Since the late s, surveys of glass and steel workers have implied an association between infrared radiation (IRR) and cataract induction.

1 – 3 Vogt 4 suggested that IRR cataract results from direct absorption of IRR in the crystalline lens. Goldmann 5 hypothesized that IRR cataract is due to temperature rise induced by IRR in the iris and heat transfer into the lens Cited by: 5.

Ocular damage threshold data remain sparse in the continuous wave (CW), near-infrared (NIR) radiation region save for the nm area that has been investigated in the past several decades.

Printed in Great Britain /97 $ + PU: S(97) Occupational exposure to optical radiation and the ocular health status of glassblowers* Olanrewaju M. Oriowof, B. Ralph Chou:!: Anthony P. Cullenand Barbara E. Robinson^ School of Optometry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada Summary The Cited by: 1.

Determination of ocular threshold levels for infrared radiation cataractogenesis / (Cincinnati, Ohio: National Institute for Occupational Safety and Heath, ), by Donald G. Pitts, Anthony P. Cullen, Center for Disease Control, and National Institute for Occupational Safety and Health (page images at HathiTrust) Resources and staffing.

Kourkoumelis, N. and Tzaphlidou, M. () Ey e safety related to near infrared radiation exposure to biometric devices. TheScie ntificW orldJOUR 5 20 – 5 DOI / tsw   Ocular temperature elevation induced by threshold in vivo exposure to nm infrared radiation and associated heat diffusion.

J Biomed Opt ; 19 (10): – ArticleCited by: 9. The primary source of infrared radiation is heat or thermal radiation. Any object that has a temperature above absolute zero ( degrees Celsius or 0 Kelvin) emits radiation in the infrared region.

Even objects that we think of as being very cold, such as ice cubes, emit infrared radiation. We experience infrared radiation every Size: 1MB. S T U D I E S ON R A D I A T I O N CATARACT* I. D E T E R M I N A T I O N OF T H E T H R E S H O L D DOSE LEVEL OF RADIATION CATARACT F U M I O KANDORI,* M.D.

Yonagi City, Japan Although Rohrschneider 1 reported that the threshold level of the radiation cataract was equal to the epilation dose at a single exposure of X rays whose factors were Cited by: 8. to assess the exact mechanisms of radiation cataractogenesis and the evaluation of the minimal dose needed to cause cataract in the human eye, leading the International Commission on Radiological Protection (ICRP) initially to recommend threshold dose limits for Author: Spyratou E, John A, Kalliopi P, Constantinos B, MersiniMakropoulou, Alex, er S, Efstathios Efstathop.

For example, photochemical reactions are the principal cause of threshold level tissue damage following exposures to either actinic ultraviolet radiation ( μm μm) for any exposure time or "blue light" visible radiation ( μm μm) when exposures are greater than 10 seconds. Pitts D.G., Cullen A.P.

and Dayhaw-Barker P. () "De-termination of ocular threshold levels for infrared radiation cataractogenesis" US Dept. Health and Human Sciences, National Institute for Occupational Safety and Health Pub-lications Fig 3.

The Infrared region of the Electromagnetic spectrum The human eye responds to visible light in the range to microns. The vast majority of infrared temperature measurement is made in the range to 20 microns.

Although emissions are mostly unable to be detected by a standard camera the Thermal Imager canFile Size: KB. The effects of infrared radiation on rabbit and monkey eyes were tested to establish the ocular threshold exposure values for radiation in the to nanometers (nm) wavelength range necessary to produce cateracts in the crystalline lenses.

A watt lamp was .A variety of optical and electro-optical instruments are used for both diagnostic and therapeutic applications to the human eye.

These generally expose ocular structures to either coherent or incoherent optical radiation (ultraviolet, visible, or infrared radiation) under unique conditions. We convert both laser and incoherent exposure guidelines derived for normal exposure conditions to the.D.

G. Pittsand A. P. Cullen, “ Determination of infrared radiation levels for acute ocular cataractogenesis,” Albrecht von Graefes Arch Klin Exp. Ophthalmol.– (). Google Scholar Crossref; by: 1.