National Opticianry Competency Exam Secrets helps you ace the National Opticianry Competency Exam, without weeks and months of endless studying. Our comprehensive National Opticianry Competency Exam Secrets study guide is written by our exam experts, who painstakingly researched every topic and concept that you need to know to ace your test. Our original research reveals specific weaknesses that you can exploit to increase your exam score more than you've ever imagined. National Opticianry Competency Exam Secrets includes: The 5 Secret Keys to National Opticianry Competency Exam Success: Time is Your Greatest Enemy, Guessing is Not Guesswork, Practice Smarter, Not Harder, Prepare, Don't Procrastinate, Test Yourself; A comprehensive General Strategy review including: Make Predictions, Answer the Question, Benchmark, Valid Information, Avoid Fact Traps, Milk the Question, The Trap of Familiarity, Eliminate Answers, Tough Questions, Brainstorm, Read Carefully, Face Value, Prefixes, Hedge Phrases, Switchback Words, New Information, Time Management, Contextual Clues, Don't Panic, Pace Yourself, Answer Selection, Check Your Work, Beware of Directly Quoted Answers, Slang, Extreme Statements, Answer Choice Families; A comprehensive content review including: Ultraviolet Rays, Refraction, Polycarbonate Lens, Specific Gravity, Datum System, Vogel's Rule, Prentice's Rule, Chromatism, Focimeter, Compound Lenses, Annulus of Zinn, Vergence, Strabismus, Aphakia, Carbon Fiber Graphite, Nominal Power, Toric Transposition, Bicentric Grinding, Angle of Deviation, Compound Prism, Numont Mounting, Bicentric Grinding, Monocular Pupillary Measurement, Nylon Suspension, Frontal Angle, Apparent Thickness Formula, Pupillometer, Astigmatism, Vertex Compensation, Lensmeter, Layers of the Cornea, Tint Specifications, Index of Refraction, Strap Bridge, Anisometropia, Effective Power Formula, Total Internal Reflection, Hyperopia, Boxing System, and much more...