Phernell Walker, Mba, Abom possesses expertise in optics, team building, management, practice management, public speaking and 45 more skills. Colleagues describe them as "In all my years within the ophthalmic industry, I have never met anyone more knowledgeable and passionate about their profession. I have attended several of his lectures and business meetings and know that his audience always leaves enlightened and energized by his knowledge and excitement in what he does. Phernell is a tremendous asset to our trade." and "Phernell Walker is an awesome instructor in optics, he can make complicated optical formulas easy to understand and apply in real life. His book, Pure Optics, makes passing the ABO exam a breeze. His enthusiasm for the optical industry is inspirational."