منابع مشابه
Blue light hazard and aniridia.
The fundi of three patients with aniridia were photographed with a 470 nm illuminating light source. No apparent change in contrast was observable throughout the macular region. This would suggest an absence of the macular pigment. The likelihood of aniridics being more susceptible than normal persons to blue light damage is discussed.
متن کاملAge-related maculopathy and the impact of blue light hazard.
The pathogenesis of age-related maculopathy (ARM), the most common cause of visual loss after the age of 60 years, is indeed a complicated scenario that involves a variety of hereditary and environmental factors. The pathological cellular and molecular events underlying retinal photochemical light damage, including photoreceptor apoptosis, have been analysed in experimental animal models. Studi...
متن کاملBlue-light hazard from CO2 arc welding of mild steel.
OBJECTIVES The objective was to quantify the blue-light hazard from CO(2) arc welding of mild steel. METHODS The spectral radiance of arcs in CO(2) arc welding of mild steel was measured for solid and flux-cored wires at welding currents of 120-480 A. Effective blue-light radiance and the maximum acceptable exposure duration were calculated from the spectral radiance using their definitions i...
متن کامل[Aniridia].
¿Cómo se trata la aniridia? Hay varios tratamientos disponibles para aniridia, incluyendo lentes polarizados, lentes de contacto especiales, lentes ahumados y otros dispositivos ópticos de ayuda. Los pacientes con aniridia deberán ser mantenidos bajo vigilancia médica, y examinados regularmente por glaucoma; Si se desarrolla el glaucoma, se pueden recomendar otros tratamientos (que pueden inclu...
متن کاملPlant blue-light receptors.
Plants have several blue-light receptors, which regulate different aspects of growth and development. Recent studies have identified three such receptors: cryptochrome 1, cryptochrome 2 and phototropin. Cryptochromes 1 and 2 are photolyase-like receptors that regulate hypocotyl growth and flowering time; phototropin mediates phototropism in response to blue light. In addition, phytochrome A has...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 1985
ISSN: 0007-1161
DOI: 10.1136/bjo.69.3.233