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dc.contributor.authorFletcher, Laura
dc.date.accessioned2014-03-04T21:12:15Z
dc.date.available2014-03-04T21:12:15Z
dc.date.issued2013-08
dc.identifier.otherfletcher_laura_201308_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/fletcher_laura_201308_ms
dc.identifier.urihttp://hdl.handle.net/10724/29036
dc.description.abstractThe predominant factor limiting the detectability of distant targets is veiling due to atmospheric scattering, known commonly as haze. It has been suggested that yellow filters (in this case, the macular pigments, MP) that absorb this haze could extend visual range. This hypothesis was tested on 27 subjects with a wide range of MP optical densities. Visibility was measured by varying the amount of simulated blue haze needed to veil a sine-wave grating (7.5 cyc/deg). Visibility for this target under xenon light and shortwave deficient (SWD) light was also assessed. MP was significantly related to energy at threshold for both haze (r = 0.59, p < 0.01) and xenon (r = 0.60, p < 0.01) backgrounds, but not the SWD background. Thus, subjects with higher levels of MP could withstand more light before losing sight of the target, which is consistent with previous modeling by Wooten and Hammond (2002).
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectMacular pigment
dc.subjectlutein
dc.subjectzeaxanthin
dc.subjectvisibility
dc.subjectatmospheric haze
dc.titleVisibility through simulated atmospheric haze and its relation to macular pigment
dc.typeThesis
dc.description.degreeMS
dc.description.departmentPsychology
dc.description.majorPsychology
dc.description.advisorBilly Hammond
dc.description.committeeBilly Hammond
dc.description.committeeJames Brown


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