By using a simple to implement program using scheduling and measuring, teamwork and accountability, job packets, and a one page Excel spread sheet production schedule, turned business around within a few days to produce 370% more productivity and a 80% gross profit. Team members: Peter Kraus.
When the pupil size changes, the pigments in the iris compress or spread apart, changing the eye color a bit. Certain emotions can change both the pupil size and the iris color. That's why some people say their eyes change colors when they're angry or loving. Save 10-30% off your eye exam using the BenefitsPalâ¢ card.
Eye color is determined by the differences in amounts and types of pigments present in the iris. Pigments are determined often by genetic alleles, however some conditions can â¦cause a change in eye color. I would have stopped here however you asked WHY do eyes have color, and not HOW do eyes have color. Hence you may suggest that eye color has some functionality, and you wish to query this. There is no solid link, however empirical studies have some correlations between lighter eye colors and earlier loss of vision (ARMD).