* RSR Interviews a UC San Francisco Professor of Ophthalmology: [Update: To hear RSR's 2014 analysis of this debate, go to rsr.org/eye-evolution.] Real Science Radio co-host Bob Enyart debates clinical professor of ophthalmology Dr. Gary Aguilar on the evolution of the eye. Six months ago Gary recommended that Bob read a 2012 book by Dr. Schwab, a colleague of Aguilar's at UC Irvine, about which Russell Fernald says that Evolution's Witness is "likely to be consulted by everyone interested in evolution and eyes." Hear that 40-minute debate about the eye by clicking any of our standard audio links above, or click here for an 83-minute wide-ranging discussion that also addresses many non-science issues.
* Ivan Schwab's Evolution's Witness -- How Eyes Evolved: Within minutes of the mailman delivering this book, on March 31, 2012, Bob wrote on the title page, with a number of folks around him signing as witnesses: "Prediction: Very little of this book will be about how eyes evolve." Dr. Aguilar described this textbook as a "tour de force" showing clearly how eyes evolved. During today's interview, Bob asserts that his prediction was valid, and that 99% of this book has nothing to do with how eyes evolve. It's a great anatomy book though!
* The Opsin Missing Chapter: Opsin is the protein in photoreceptor cells that can detect a single photon and then signal that a photon has struck it. One might expect from a book on the eye's evolution, that after a book's introduction, the author might include a chapter on an explanation, conceptually, of how opsin might evolve. In vertebrates and invertebrates, opsin requires a chain of 150 to 250 amino acids, which then must be folded correctly into a very specialized nano-machine which can pass along an output signal whenever the protein gets hit with a single photon. But, as creationists would expect, no such chapter exists in the book. And actually, all the difficult problems that one would have to address if he were actually writing a book on "How eyes evolved," do not appear in the book.
* The Vision Challenge Missing Chapter: Bob Enyart brought up this vision challenge to Gary Aguilar, but, like most atheists and evolutionists we've discussed this with, Gary was unresponsive. It appears that atheists and evolutionists do not even know how to think about this problem, let alone can they offer any conceivable notion about how it could even theoretically be solved. See this vision challenge presented in full from our debate with TheologyOnline.com's resident atheist Zakath. Bob had predicted that even a state-of-the-art "tour de force" textbook by an ophthalmology professor would not even begin to describe how vision might evolve, and also, that this interview with an ophthalmologist professor would demonstrate their basic inability to substantively think through something that they routinely oversell to the public as a done deal. "We know 'how eyes evolved,' only an ignorant person would doubt our claims." At 2:33 into an interview on The Evolution of the Eye, Richard Dawkins illustrates the RSR "APPtitude test," aka, the Atheist Popularity Postulate, that the evolutionists who become the most popular are the ones who say the most absurd things with the straightest face. Imagine his evolving, curling, sheet of light-sensitive paper sending a static-like data stream to an unwitting brain that must then interpret the predator's shadow or direction of light (from the data represented by the screen above, on the left).
* Evolution Misled Eye Expert About the Eye: Gary Aguilar repeatedly claimed that the plica semilunaris (in the corner of your eye) is a functionless leftover of evolution. For example, at 3:15 into our interview, he said, "There are aspects of the human eye, for example, the nictitating membrane [which in some creatures is an additional, transparent eyelid] in lower animals is present in the plica semilunaris which has no function in humans; none whatsoever." Then to Bob's question, "Dr. Aguilar, can you repeat that, what is it that has no function whatsoever?" Gary answered, "The plica p-l-i-c-a semilunaris." However, according to the authoritative Duane's Foundations of Clinical Ophthalmology (Vol. 2, Ch. 2: Plica Semilunaris), the plica functions during movement of the eye, to help maintain tear drainage, and to permit greater rotation of the eyeball, for without the plica, the membrane called the conjunctiva would attach directly to the eyeball, restricting movement. Gary here illustrated something we describe about evolutionists, that rather than being informed with the latest knowledge from his own area of expertise, Aguilar claimed decades out of date "evidence", in his case, on the anatomy of both the wiring of the retina, and on the plica, claiming it is a functionless leftover. Rather than researching his Darwinian claims in the most relevant scientific literature, Aguilar, following Dawkins, ultimately got his outdated claims from a 150-year old book by Charles Darwin. Aguilar also repeats Dawkins' long-refuted claim, based on scientific ignorance and evolutionary bias, that the human eye is wired backward. For an explanation of why our eye is wired the reverse of an octopus, and optimally for human vision, listen to the Enyart-Aguilar-Eye-Excerpts, and see Dr. Carl Wieland's article, and a paper by Peter Gurney, a fellow of the Royal Colleges of Ophthalmologists in a peer-reviewed creation journal, as well as Gurney's popular article that deals with both the plica and the wiring. And read and hear Dr. Jerry Bergman explain that the function of the plica semilunaris has been documented since the 1930s. 2013 UPDATE: Dr. Aguilar wrote to Bob Enyart, "...let me acknowledge that the plica semilunaris is considered to have some function..." though he denied the plica aids in globe movement, thereby apparently disagreeing with the statement in Duane's Ophthalmology that, "if the conjunctiva were to directly join the eyelids to the globe, the globe and eyelids would both be restricted in movement." Perhaps Gary could share his disagreement with DO's Darlene Dartt and help everyone get to the bottom of that one particular detail.
* The Missing Trochlea Challenge Chapter: Ivan Schwab doesn't include a chapter on how simple mechanics of the eye would have evolved, as illustrated in this trochlea challenge which has been circulating on the web in evolution circles from well before Schwab's book was published. Back on April 18th, we sent to Gary our PZ Myers Trochlea Challenge. It's this simple sketch of the human eye, with a single question in its caption. PZ has responded to us, admitting that he cannot answer this challenge, and we appreciate that truthfulness.
