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Saturday, November 7, 2020 | History

2 edition of Ocular ultraviolet effects from 295 nm to 400 nm in the rabbit eye found in the catalog.

Ocular ultraviolet effects from 295 nm to 400 nm in the rabbit eye

Donald G. Pitts

Ocular ultraviolet effects from 295 nm to 400 nm in the rabbit eye

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Published by U.S. DHEW, PHS, Center for Disease Center, National Institute for Occupational Safety and Health, Division of Biomedical and Behavioral Science in Cincinnati, Oh .
Written in English

    Subjects:
  • Ultraviolet Rays -- adverse effects.,
  • Cornea -- injuries.,
  • Rabbits.

  • Edition Notes

    Bibliography: p. 78-82.

    StatementDonald Graves Pitts, Anthony Peter Cullen.
    SeriesNIOSH research report, DHEW (NIOSH) publication -- no., DHEW publication -- no. (NIOSH) 77-175.
    ContributionsCullen, Anthony P., University of Houston. College of Optometry.
    The Physical Object
    Paginationvi, 82 p. :
    Number of Pages82
    ID Numbers
    Open LibraryOL14733896M

    Ultraviolet (UV) radiation is a known carcinogen, as it is associated with up to 90% of NMSCs. 2,3 With the current risks of skin cancer. This represents an area where further legislation might be important to mitigate the effects of IT. Ocular ultraviolet effects from nm to nm in the rabbit eye. InDHEW (NIOSH) Publication. A topical low dose test volume of 10 microlitre is recommended as this accounts for the rabbit's smaller eye size relative to the humans and provides better correlation.   In vivo imaging system (IVIS), after intravitreal injection, estimated NPC loss by nm photon emission (nm excitation) at 1 to 3-week intervals following initial scan at day Results NPC of 2Arg-peptides or 3Arg-peptides showed clearance t1/2 of 7 days and 17 days respectively, unconjugated NP t1/2 was.


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Ocular ultraviolet effects from 295 nm to 400 nm in the rabbit eye by Donald G. Pitts Download PDF EPUB FB2

Get this from a library. Ocular ultraviolet effects from nm to nm in the rabbit eye. [Donald Graves Pitts; Anthony Peter Cullen; University of Houston. College of Optometry.; National Institute for Occupational Safety and Health.

Division of Biomedical and Behavioral Science.]. Ocular ultraviolet effects from nm to nm in the rabbit eye. Authors Anonymous. Get this from a library.

Ocular ultraviolet effects from nm to nm in the rabbit eye. [Donald G Pitts; Anthony Peter Cullen; National Institute for Occupational Safety and Health. Division of Biomedical and Behavioral Science.; University of Houston. College of Optometry.]. Pigmented rabbit eyes were exposed to the nm.

band-pass UV radiant energy in 5 nm. steps from to nm. and at random intervals above nm. Corneal and lenticular damage was assessed and classified with a biomicroscope.

Corneal threshold radiant exposure (Hc) rose very rapidly from Jcm at nm. to Jcm at by:   Author of Determination of ocular threshold levels for infrared radiation cataractogenesis, Visual illusions and aircraft accidents, Ocular ultraviolet effects from nm to nm in the rabbit eye, Ocular ultraviolet effects from nm to nm in the rabbit eye, Transmittance of the visible spectrum through the components of the bovine ocular media, Environmental vision.

D.G. Pitts, P.D. Hacker, W.H. Parr, Ocular ultraviolet effects from nm to nm to nm in the rabbit eye() DHEW (NIOSH) Publication No. 77– October S. Lerman, Ultraviolet radiation and human cataractogenesis Invest.

D.G. Pitts, A.P. Cullen, Ocular ultraviolet effects from to nm in the rabbit eye A preliminary report () National Institute of Occupational Safety and Health, Division of Biomedical and Behavioral Science Cincinnati, Ohio DHEW (NIOSH) Publication No 6. Ocular effects of ultraviolet radiation from to nm.

Invest Ophthalmol Vis Sci ; – CAS PubMed Google Scholar. (2–5) This factor is critical in considering the phototoxic effects of various drugs in the retina. The young lens is clear and colorless but contains absorbing compounds in the range of from to nm. With aging the human lens becomes yellow and thus increases its absorptive characteristics between and nm.

Pitts DG, Cullen AP () Ocular ultraviolet effects from nm to nm in the rabbit eye, DHEW (NIOSH) Publication No. 77– Ruth W, Levin M, Knave B () Occupational hygienic evaluation of infrared emitters for drying automobile enamel. Author(s): Pitts,Donald G; Cullen,Anthony Peter; National Institute for Occupational Safety and Health.

Division of Biomedical and Behavioral Science.; University of Ocular ultraviolet effects from 295 nm to 400 nm in the rabbit eye book. College of Optometry. Title(s): Ocular ultraviolet effects from nm to nm in the rabbit eye/ [Donald Graves Pitts, Anthony Peter Cullen, principal investigators].

Ocular Effects of UVR In the eye, the proportion of UV radiation absorbed by different structures depends on the wavelength of the beam [19]. The first structure which absorbs UV radiation is the tear film [1].

The cornea and the lens cortex are major UV filters and absorb primarily the shorter, more active UVB range wavelengths [20]. Preventing UV damage to the eye involves education of the public and eyecare providers Public educa - tion is the keystone of any serious effort to reduce the effects of UV on ocular health, because implementation of eye protection is ultimately a matter of what individuals do each day-the habit of UV-protective eyewear in real-life.

Ultraviolet B (UVB [ nm is to clarify the effects of facial anatomy on ocular UV exposure between Asians and Europeans. and repeated UVB radiation of the rabbit eye with the same. Ocular Ultraviolet Radiation Hazards In Sunlight SUNLIGHT-RELATED EYE DISEASES Ultraviolet radiation can play a contributory role in the development of various ocular disorders including age-related cataract, pterygium, cancer of the skin around the eye, photokeratitis and lenses which absorb % of the UV radiation to nm.

Although ultraviolet (UV) sensitivity is widespread among animals it is considered rare in mammals, being restricted to the few species that have a visual pigment maximally sensitive (λ max) below r, even animals without such a pigment will be UV-sensitive if they have ocular media that transmit these wavelengths, as all visual pigments absorb significant amounts of UV if the.

ocular disease. First, wherever they occur, ocular pain and blindness may compromise animal welfare. Second, several eye diseases are important signs of systemic disease with important implications both for pets as well as for laboratory animal colonies. Third, ocular disease may.

Ocular effects of ultraviolet radiation from nm. Invest Ophthalmol Vis Sci ; – CAS PubMed Google Scholar. Pitts D G, Cullen A P and Hacker P D Ocular Ultraviolet from nm to nm in the Rabbit Eye National Institute for Occupational Safety and Health, Cincinatti, OH, contract CDC, DHEW (NIOSH) Publication No Google Scholar.

Pitts DGCullen APHacker PDParr WH Ocular Ultraviolet Effects From nm to nm in the Rabbit Eye. Washington, DC: US Dept of Health, Education and. Ultraviolet (UV) is a form of electromagnetic radiation with wavelength from 10 nm (with a corresponding frequency of approximately 30 PHz) to nm ( THz), shorter than that of visible light but longer than radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the is also produced by electric arcs and specialized.

UVB region, the integrating intensity of – nm wavelengths UV is % of the integrating intensity of – nm wavelengths UV. The ‐nm UVC lamp is designated as irradiator A. [Correction added on Jafter first online publication: The figure was updated.]. The purpose of this study is to evaluate the effects of ultraviolet blood irradiation on the blood when a low dose of ultraviolet C (UV-C) is directly irradiated to the blood in a diabetic rabbit model and to evaluate the effects on treatment for diabetes.

Type 1 diabetics were induced by intravenous (IV) injection of alloxan monohydrate mg/kg into New Zealand white rabbits weighing 2 - 2. The human eye can see light of wavelengths ranging from nm (also known as the visible spectrum).

Shorter wavelengths than nm are classified as ultraviolet (UV) light while wavelengths longer than nm are classified as infrared light. UV radiations: definition and transmission.

RABBIT A Schematic Eye for the Rabbit, HUGHES, Vision Research, RAT A Revision of the Rat Schematic Eye, MASSOF and CHANG, Vision Ocular Anatomic Features Dog, Rabbit, Rat & Mouse, Primate Rabbits are able to resist blinking for long intervals because they have a very stable tear film.

This. Their description of the grading of ocular reaction to ultraviolet and their criteria were used extensively during this research. They estab-lished the long wavelength limit between nm and a threshold of 6 2 x 10 ergs/cm at nm for the rabbit. A central question to UV effects.

Pitts D G, Cullen A P and Parr W H Ocular Ultraviolet Effects from nm to nm in the Rabbit Eye (Washington, DC: US Department of Health, Education, Welfare (NIOSH)) Pitts D G and Tredici T J The effects of ultraviolet on the eye Am.

Ind. Hyg. Assoc. 32 One eye of each rabbit was treated and the second eye was used as a control. The rabbits were divided into three groups. The first group (three rabbits) was exposed to nm UVR at a dose producing biomicroscopically significant keratitis ( J/cm 2, or 10 times the corneal threshold dose for keratitis).

The cornea is directly exposed to UV radiation of longer wavelength (UVA rays, – nm) as well as shorter wavelength (UVB rays, – nm). The cornea absorbs approximately 80% of UVB rays and 34% of UVA rays and acts as a UVB filter.

The aqueous humor, containing ascorbic acid, proteins, and some amino acids, also absorbs UVB radiation. Ultraviolet (UV) radiation that reaches the Earth’s surface is in wavelengths between and nm (nanometers, or billionths of a meter). This is shorter than wavelengths of visible light, which are to nm.

People and plants live with both helpful and harmful effects of ultraviolet (UV. The Ocular Effects of Single Pulses of μ m and – μ m q-Switched Laser Radiation, (a report to the Los Alamos Scientific Lab from the Department of Biophysics, Virginia Commonwealth University, Richmond, VA, Los Alamos, NM, ).

The cornea transmits most of the visible light spectrum, including the UV spectrum, with absorption by the corneal epithelium.

[] The cornea absorbs 10%% of UV-A and close to % of UV-C. [] UV rays irritate the superficial corneal epithelium, causing inhibition of mitosis, production of nuclear fragmentation, and loosening of the epithelial layer. Ophthalmic Research microscope camera video of a rabbit eye dissection: lens, iris, pupil, vitreous humor, retina.

Ultraviolet Effects from to nm in the Rabbit Eye. Contract CDC‐99‐74‐12, Nat. Inst, for Occup. Safety and Health. DHEW Pub. (NIOSH) 77– Cincinnati, Ohio (October ); see also: Ocular effects of ultraviolet radiation from to nm. This is a rabbit's fundus - the question image was from a New Zealand White animal with a non-pigmented eye while this is from a normally pigmented Netherland Dwarf.

We call this a merangiotic fundus - the rebbit has a long horizontal visual streak, giving it good vision all along the horizon, from whence might spring a hungrey fox. The rabbit also has the following basic mammalian eyeball structures: iris, pupil, lens, ciliary body, vitreous, choroid, and retina.

Albino rabbits lack pigment in their iris and choroids. This gives the albino rabbit a normal, reddish reflection from within the eye.

The eyelids open in the rabbit about 10 days after birth. Scratches on the Surface of the Eye. Once a rabbit has had its eye scratched, there is high risk of the formation of an ulcer. This can be very painful and may cause the eye to appear cloudy.

Scratches and ulcers can cause the rabbit to partially close its eye and there may be an almost pin prick like dip on the surface of the eye. Effects of ultraviolet radiation produced from artificial lights on serum hydroxyvitamin D concentration in captive domestic rabbits (Oryctolagus cuniculi).

Am. Ocular ultraviolet effects from nm to nm in the rabbit eye. Oct Powder actuated fastening tools, employer's safety training guide.

Sep Criteria for a recommended standard occupational exposure to asphalt fumes. Sep   Rabbits have eyes that are not that much different internally than ours other than shape. Short wave UV rays (UVC) don’t go past the cornea before being scattered and absorbed.

The middle part of the UV spectrum (UVB) which have longer wavelengths. Effects of VEGF Inhibitor Conbercept on Corneal Neovascularization Following Penetrating Keratoplasty in Rabbit Model. Liu H, Zhang XR, Xu HC, Ma Y, Huang LY, Zhai LY, Zhao Y.

Clinical OphthalmologyPublished Date: 31 July Figure 1. Bench layout for ocular tissue collection. Matrix and Weight (g) Approximate Age Body Weight Whole Aqueous Iris-Ciliary Vitreous Percent Species (Strain) (kg) Eye Humor Cornea Lens Body Humor Retina Choroid-RPE Sclera Collected Albino Rabbit (New Zealand White) Male Mean mo 0.Apoptosis in UV-exposed rabbit corneas.

Cornea Ocular effects of ultraviolet radiation from to nm. Invest Ophthalmol Vis Sci UV absorbance of the human cornea in the to nm range. Invest Ophthalmol Vis Sci ().

UV rays, the prooxidant/antioxidant imbalance in the cornea and oxidative eye damage.