|The best-selling exam preparation manual for more than 15 years has been extensively updated into a Third Edition. With revisions and additional material that match the new JCAHPO. criteria for Certified Ophthalmic Assistants (COA), this study resource will remain the top choice for those studying for certification. With nearly 1,400 questions, the Certified Ophthalmic Assistant Exam Review Manual, Third Edition contains more questions with explanatory answers than any other study aid. Additionally, all 19 exam criteria headings are covered inside, including history taking, visual assessment, medical ethics, pharmacology, ophthalmic imaging, surgery, and more.