An Analysis of Chorioretinal Thermal Response to Intense Light Exposure

1976 ◽  
Vol BME-23 (3) ◽  
pp. 207-215 ◽  
Author(s):  
Eugene H. Wissler
Keyword(s):  
Light Exposure ◽  
Thermal Response ◽  
Intense Light

Oxidative Damage and Responses in Retinal Nuclei Arising from Intense Light Exposure

1995 ◽  
pp. 9-17 ◽  
Author(s):  
D. T. Organisciak ◽  
R. K. Kutty ◽  
M. Leffak ◽  
P. Wong ◽  
S. Messing ◽  
...  
Keyword(s):  
Oxidative Damage ◽  
Light Exposure ◽  
Intense Light

Intense light exposure changes the crystallin content in retina

2003 ◽  
Vol 76 (1) ◽  
pp. 131-133 ◽  
Author(s):  
Hirokazu Sakaguchi ◽  
Masaru Miyagi ◽  
Ruth M. Darrow ◽  
John S. Crabb ◽  
Joe G. Hollyfield ◽  
...  
Keyword(s):  
Light Exposure ◽  
Intense Light

scholarly journals Attenuating Photostress and Glare Disability in Pseudophakic Patients through the Addition of a Short-Wave Absorbing Filter

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Billy R. Hammond
Keyword(s):  
Blue Light ◽  
Recovery Time ◽  
Light Exposure ◽  
The United States ◽  
Short Wave ◽  
Light Conditions ◽  
Central Target ◽  
Intense Light ◽  
Glare Disability ◽  
Photostress Recovery Time

To evaluate the effects of filtering short wavelength light on visual performance under intense light conditions among pseudophakic patients previously implanted with a clear intraocular lens (IOL). This was a patient-masked, randomized crossover study conducted at 6 clinical sites in the United States between September 2013 and January 2014. One hundred fifty-four bilaterally pseudophakic patients were recruited. Photostress recovery time and glare disability thresholds were measured with clip-on blue-light-filtering and placebo (clear; no blue-light filtration) glasses worn over patients’ habitual correction. Photostress recovery time was quantified as the time necessary to regain sight of a grating target after intense light exposure. Glare disability threshold was assessed as the intensity of a white-light annulus necessary to obscure a central target. The order of filter used and test eye were randomized across patients. Photostress recovery time and glare disability thresholds were significantly improved (bothP<0.0001) when patients used blue-light-filtering glasses compared with clear, nonfiltering glasses. Compared with a nonfiltering placebo, adding a clip-on blue-absorbing filter to the glasses of pseudophakic patients implanted with clear IOLs significantly increased their ability to cope with glare and to recover normal viewing after an intensive photostress. This result implies that IOL designs with blue-light-filtering characteristics may be beneficial under intense light conditions.

scholarly journals Proteomic Changes in the Photoreceptor Outer Segment upon Intense Light Exposure

2010 ◽  
Vol 9 (2) ◽  
pp. 1173-1181 ◽  
Author(s):  
Dagmar Hajkova ◽  
Yoshikazu Imanishi ◽  
Vikram Palamalai ◽  
K. C. Sekhar Rao ◽  
Chao Yuan ◽  
...  
Keyword(s):  
Outer Segment ◽  
Light Exposure ◽  
Photoreceptor Outer Segment ◽  
Intense Light

Microcalorimeters for X-Ray Spectroscopy

1988 ◽  
Vol 102 ◽  
pp. 41
Author(s):  
E. Silver ◽  
C. Hailey ◽  
S. Labov ◽  
N. Madden ◽  
D. Landis ◽  
...  
Keyword(s):  
High Resolution ◽  
High Efficiency ◽  
Thermal Response ◽  
Low Noise ◽  
High Resolution Spectroscopy ◽  
Superconducting Transition ◽  
Sapphire Substrates ◽  
Laboratory Plasmas ◽  
Adiabatic Demagnetization ◽  
Theoretical Predictions

The merits of microcalorimetry below 1°K for high resolution spectroscopy has become widely recognized on theoretical grounds. By combining the high efficiency, broadband spectral sensitivity of traditional photoelectric detectors with the high resolution capabilities characteristic of dispersive spectrometers, the microcalorimeter could potentially revolutionize spectroscopic measurements of astrophysical and laboratory plasmas. In actuality, however, the performance of prototype instruments has fallen short of theoretical predictions and practical detectors are still unavailable for use as laboratory and space-based instruments. These issues are currently being addressed by the new collaborative initiative between LLNL, LBL, U.C.I., U.C.B., and U.C.D.. Microcalorimeters of various types are being developed and tested at temperatures of 1.4, 0.3, and 0.1°K. These include monolithic devices made from NTD Germanium and composite configurations using sapphire substrates with temperature sensors fabricated from NTD Germanium, evaporative films of Germanium-Gold alloy, or material with superconducting transition edges. A new approache to low noise pulse counting electronics has been developed that allows the ultimate speed of the device to be determined solely by the detector thermal response and geometry. Our laboratory studies of the thermal and resistive properties of these and other candidate materials should enable us to characterize the pulse shape and subsequently predict the ultimate performance. We are building a compact adiabatic demagnetization refrigerator for conveniently reaching 0.1°K in the laboratory and for use in future satellite-borne missions. A description of this instrument together with results from our most recent experiments will be presented.

Photosynthetic responses of Coffea arabica leaves to a short-term high light exposure in relation to N availability

1997 ◽  
Vol 101 (1) ◽  
pp. 229-239 ◽  
Author(s):  
Jose C. Ramalho ◽  
Thos L. Pons ◽  
Henri W. Groeneveld ◽  
M. Antonieta Nunes
Keyword(s):  
Coffea Arabica ◽  
Light Exposure ◽  
High Light ◽  
N Availability ◽  
Short Term ◽  
Photosynthetic Responses
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