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Volker Seiberth - One of the best experts on this subject based on the ideXlab platform.

  • trans scleral Diode Laser photocoagulation in proliferative sickle cell retinopathy
    1999
    Co-Authors: Volker Seiberth
    Abstract:

    Abstract Objective To demonstrate the feasibility of trans-scleral Diode Laser photocoagulation for the treatment of proliferative sickle cell retinopathy. Design Interventional case report. Intervention Trans-scleral Diode Laser scatter photocoagulation was applied to both eyes of a 30-year-old man with hemoglobin SC disease. Main outcome measures Regression of retinal vascular proliferation and of dye leakage on fluorescein angiography. Results After coagulation, vascular proliferation receded completely. Vitreous bleeding was absorbed. There were no side effects during follow-up (22 months). Conclusion Trans-scleral Diode Laser photocoagulation proved to be an effective and safe treatment in a case of proliferative sickle cell retinopathy with vitreous bleeding.

G Grabner - One of the best experts on this subject based on the ideXlab platform.

Alan J. Kemp - One of the best experts on this subject based on the ideXlab platform.

Girish K Shah - One of the best experts on this subject based on the ideXlab platform.

William V. Boynton - One of the best experts on this subject based on the ideXlab platform.

  • The MVACS tunable Diode Laser spectrometers
    2001
    Co-Authors: Randy D. May, Siamak Forouhar, David Crisp, W. Stephen Woodward, David A. Paige, Asmin V. Pathare, William V. Boynton
    Abstract:

    Two independent tunable Diode Laser spectrometers are resident aboard the Mars Polar Lander as part of the Mars Volatiles and Climate Surveyor payload. One spectrometer is located on the meteorological mast for measurements of H2O and CO2 in the free atmosphere, and the other serves as the H2O and CO2 analyzer for the Thermal and Evolved Gas Analyzer. Water vapor is measured using a tunable Diode Laser operating at 1.37 μm, while CO2 is measured using a second Laser operating near 2.05 μm. The 2.05 μm Laser also has isotopic analysis capability. In addition to the major CO2 isotopomer (12C16O16O), analyses of 13C16O16O and 12C18O16O in the atmosphere and in the Thermal and Evolved Gas Analyzer are possible under certain conditions. The spectrometers were designed and built at the Jet Propulsion Laboratory and have their heritage in a series of tunable Diode Laser spectrometers developed for Earth atmospheric studies using high-altitude aircraft and balloon platforms. The 1.37 μm Diode Laser on the meteorological mast will provide the first in situ measurements of water vapor in the Martian boundary layer, with a detection sensitivity an order of magnitude greater than the water vapor abundances inferred from the remote-sensing observations by the Viking Orbiters.