It is fascinating to explore the functions of the various parts of the eyes that play an important role in the way that our visual system works. This article focuses on the role of the iris in vision function. It also shares some interesting and even crazy facts about the human eye you never knew. So, sit back, relax and enjoy this fun and educational article.
from Health and Fitness:Eyes Vision Articles from EzineArticles.com http://ift.tt/2s573tZ