Eyes are beautiful, these are gorgeous and these are something to be taken care of. Nature has endowed us with the best optical device, our eyes. Light enters eye through cornea and then passes through pupil. The size of the pupil changes in based on accomodating power of eyes. There are several defects of eyes associated with humans such as presbyopia, hypermetropia, myopia, astigmatism. Even eye operations are sometimes needed keeping in view these problems related to sight. Human brain is complex and it manipulates the electric signals sent out by various organs including that of the eyes. Our brain then interprets on the received signal to perceive the objects which we see around us and respond accordingly. Human brain together with eyes are marvellous organ which has done wonders. Sometimes, it is said that in human heart, eyes and brain all are connected in a different way and all these parts perform in a single operation together associated with certain feelings. Well, the truth is upto you but no doubt, these are our greatest assets and we must take good care of these. All these orgrans are rather very intricate and these help us survive and face challenges of life!