By: Jim Virkler; ©2012 Do you get the picture? This familiar idiom asks if the listener understands a situation clearly. In terms of understanding literal visual pictures, that is, understanding the meaning of the information our eyes provide, we sometimes come up short teaching the role of mental processes involved with seeing. Stated another way,…

By: Jim Virkler; ©2012 Discussion of the more technical aspects of eye anatomy, including the path of light through the eye–cornea, aqueous humor, lens, and vitreous humor, along with the amazing retina and how it functions–turns out to be tedious for a portion of our population. Their interest may extend only to maintaining eye health…

By: Jim Virkler; ©2012 As we review the biological principle of “Form fits Function,” there is no better example than the remarkable sense of human light detection. Without the functional retina, the innermost layer of our eyeball, we would possess no vision. Most of the eight million extant species on our planet share with humans…

By: Jim Virkler; ©2012 In the current series of posts on human sight, this title may seem irrelevant at first glance. An explanation is in order. Perhaps you have been asked whether you would select the sense of sight or hearing should you be forced to do without one or the other. The question is…

By: Jim Virkler; ©2012 Human sight is an ultimate production of the brain. As I look across the room from my computer keypad there would be no cognizance of the scene without my brain’s interpreting ability. My brain provides conscious awareness of the reality of the scene. Without a functioning mind sight does not occur.…

By: Jim Virkler; ©2012 One entire chapter of John’s gospel is devoted to a remarkable story of physical and spiritual healing. The ninth chapter of John chronicles the story of the man blind from birth whose sight was restored by one of Jesus’ transcendent miracles during his three year public ministry. The story is remarkable…

By: Jim Virkler; ©2012 As we consider the sense of sight, we may focus on the anatomy of the eye, how it functions to receive and transmit light-borne messages electrically to the brain and finally, what happens in our brains to integrate the electrical messages and provide conscious perception of the visual images. However, these…

By: Jim Virkler; ©2012 We hesitate to assign sight to top ranking in the catalog of our bodily senses. That temptation, nevertheless, is strong. What wonders does our understanding of sight provide? And what of our marvelous subjective experience of sight, apart from understanding the physiology of how it works? For our sense of sight…

By: Jim Virkler; ©2012 Many people experience a well known age-related deficiency in our sight mechanism. The modern remedy for this sight deficit is within easy medical reach. We speak of the common problem known as cataracts, a minor malady providing fodder for humor relating to our golden years. Modern medicine has made cataract surgery…