If one visual cortex is damaged, optokinetic nystagmus will be lost when objects move toward the side of the cortex lesion (that is, if they approach an individual from the side of vision impairment).
90-Year-Old Activist 'Granny D' Inspires Change, Walks Across Country. I learned a few very good things during my travels with Doris Granny D Haddock. The first, which sounds hackneyed, is that one person can make a difference. It's truer than I imagined.
activist - advocating or engaged in activism activistic active - disposed to take action or effectuate change; a director who takes an active interest in corporate operations; an active antagonism; he was active in drawing attention to their grievances