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COT practice questions - frequently asked questions

Plain answers about how COT Exam Prep works: the exam, the questions, pricing, the free trial, and what you actually get.

No - and you should be wary of any site claiming otherwise. Every question here is original, written to mirror the style, difficulty, and judgment the real COT exam tests. Each one comes with a plain-language explanation of why the right answer is right and the others aren't.

The COT exam spans 22 domains: History and Documentation (3% of the exam); Visual Assessment (7% of the exam); Visual Field Testing (3% of the exam); Pupil Assessment (4% of the exam); Tonometry (4% of the exam); Keratometry (3% of the exam); Ocular Motility Testing (6% of the exam); Lensometry (3% of the exam); Refraction, Retinoscopy & Refinement (5% of the exam); Biometry (5% of the exam); Supplemental Testing (2% of the exam); Microbiology (3% of the exam); Pharmacology (3% of the exam); Surgical Assisting (6% of the exam); Ophthalmic Patient Services and Education (12% of the exam); General Medical Knowledge (5% of the exam); Optics and Spectacles (5% of the exam); Contact Lenses (5% of the exam); Ophthalmic Imaging (7% of the exam); Photography and Videography (6% of the exam); Equipment Maintenance and Repair (1% of the exam); Medical Ethics, Legal and Regulatory Issues (2% of the exam). Every practice question on this site is tagged to one of these domains.

The domains are not weighted equally on the exam. By share of the marks: Ophthalmic Patient Services and Education 12%; Visual Assessment 7%; Ophthalmic Imaging 7%; Ocular Motility Testing 6%; Surgical Assisting 6%; Photography and Videography 6%; Refraction, Retinoscopy & Refinement 5%; Biometry 5%; General Medical Knowledge 5%; Optics and Spectacles 5%; Contact Lenses 5%; Pupil Assessment 4%; Tonometry 4%; History and Documentation 3%; Visual Field Testing 3%; Keratometry 3%; Lensometry 3%; Microbiology 3%; Pharmacology 3%; Supplemental Testing 2%; Medical Ethics, Legal and Regulatory Issues 2%; Equipment Maintenance and Repair 1%.

The COT exam has 200 questions and is completed in 3 hours. Our timed practice mirrors that length and pacing, so exam day feels familiar.

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