The Constancy of Perceived Motion Under Different Spectral Conditions by Jeffrey Nightingale, James M. Brown, Billy R. Hammond

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A double-blind, placebo-controlled study on the effects of lutein and zeaxanthin on neural processing speed and efficiency. by Emily R Bovier, Lisa M Renzi, Billy R Hammond

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New photochromic spectacle lenses improve glare discomfort and photostress recovery by Jacob B. Harth, Billy R. Hammond, Cameron J. Wysocky, Lisa M. Renzi-Hammond

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A Novel Characterization of the Lower Threshold of Motion by Jacob B. Harth, Lisa M. Renzi-Hammond, Cameron J. Wysocky, Spencer F. Smith, Billy R. Hammond

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