Practise Certified Ophthalmic Technician (COT) with a short sample and answer explanations. These are independent learning materials, not official exam questions or a pass prediction.
Exam outline and official sources
International Joint Commission on Allied Health Personnel in Ophthalmology (IJCAHPO) · Official COT outlines currently linked by IJCAHPO, consulted on 2026-10-13. The weighted outline states no version or effective date. The detailed Core Examination Content Areas document carries copyright 2019–2020, which is not an examination effective date. The workbook label matches the verified credential.
This original 20-question sample covers selected topics across the outline. It does not reproduce official exam questions or cover every tested topic.
- Certified Ophthalmic Technician — IJCAHPO
- Certification Resources — IJCAHPO
- Examination Content/Sub-Content Areas: COT and COMT
- IJCAHPO Core Examination Content Areas
- Visual Acuity Testing in Adults — AAO EyeWiki
- Visual Field Testing: From One Medical Student to Another — University of Iowa
- Relative Afferent Pupillary Defect — AAO EyeWiki
- IOP and Tonometry — AAO EyeWiki
- Astigmatism Correction at the Time of Cataract Surgery — AAO EyeWiki
- Cover Tests — AAO EyeWiki
- Plus Cylinder Retinoscopy Instructional Video — University of Iowa
- Biometry for Intra-Ocular Lens Power Calculation — AAO EyeWiki
- Retinal Detachment — National Eye Institute
- Recommendations for Disinfection and Sterilization in Healthcare Facilities — CDC
- Effects of Eyelid Closure and Nasolacrimal Duct Occlusion on Systemic Absorption of Ocular Timolol
- Implementation Manual: WHO Surgical Safety Checklist 2009
- Guide to Improving Patient Safety: Teach-Back — AHRQ
- Get a Dilated Eye Exam — National Eye Institute
- Diabetic Retinopathy — National Eye Institute
- Plus Cylinder Subjective Refraction Instructional Video — University of Iowa
- Healthy Habits: Keeping Water Away from Contact Lenses — CDC
- Optical Coherence Tomography — AAO EyeWiki
- Color Fundus Photography Interpretation of Ophthalmic Findings — AAO EyeWiki
- Testing for Dry Eye — National Eye Institute
- How to Use Eyedrops — MedlinePlus
- About Cleaning, Disinfecting, and Storing Contact Lenses — CDC
- Informed Consent — AMA Code of Medical Ethics, Opinion 2.1.1
Certified Ophthalmic Technician (COT)
Start with 20 free questions, then review the explanations and any topics you missed.
An adult's distance acuity is 20/80 with current spectacles and improves to 20/25 through a pinhole. Which interpretation is best supported?
Certified Ophthalmic Technician (COT)
Flashcards
Patient Evaluation
Visual Assessment — documentation of low acuity
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