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2026 Statistics

Key Facts: COT Exam

200

Exam Questions

IJCAHPO COT (170 scored + 30 pretest)

3 hrs

Exam Time

IJCAHPO testing guidelines

$250

Exam Fee

IJCAHPO COT application

3 yrs

Certification Validity

18 Group A CE credits to renew

100

Practice Questions Here

OpenExamPrep question bank

The IJCAHPO COT exam consists of 200 multiple-choice questions (170 scored + 30 pretest) administered over 3 hours at Prometric testing centers. The exam uses criterion-referenced scoring. Prerequisites include current COA certification, minimum 1 year of ophthalmic experience, and completion of an approved training program. Certification renews every 3 years with 18 Group A CE credits. The COT is the mid-level IJCAHPO credential between COA and COMT.

About the COT Exam

The COT exam certifies ophthalmic technicians in advanced clinical skills including refractometry, tonometry, visual fields, OCT imaging, fundus photography, surgical assisting, and patient care. Building on COA-level competencies, COT certification demonstrates proficiency across the full scope of ophthalmic technology. COTs work in ophthalmology offices, surgical centers, hospitals, and research institutions, performing diagnostic testing and assisting with ophthalmic procedures.

Assessment

200 multiple-choice (170 scored + 30 pretest)

Time Limit

3 hours

Passing Score

Scaled passing score (criterion-referenced)

Exam Fee

$250 application fee (IJCAHPO / Prometric Testing Centers)

COT Exam Content Outline

~10%

History Taking and Documentation

Patient history, chief complaint, ocular/medical history, documentation standards, ophthalmic terminology, and HIPAA compliance.

~15%

Visual Assessment

Snellen and alternative acuity testing, color vision (Ishihara), contrast sensitivity, pupil testing (RAPD), Amsler grid, and visual field screening.

~15%

Refractometry and Lensometry

Autorefraction, retinoscopy, phoropter operation, Jackson cross cylinder, lensometer neutralization, keratometry, and spectacle verification.

~10%

Ocular Motility and Binocular Vision

Cover test, alternate cover test, NPC, extraocular muscle assessment, strabismus measurement, Worth 4-dot, and stereopsis testing.

~20%

Diagnostic Testing and Imaging

Goldmann and non-contact tonometry, pachymetry, automated perimetry, OCT (macular and RNFL), fundus photography, A-scan biometry, and slit lamp biomicroscopy.

~15%

Ophthalmic Patient Care and Pharmacology

Mydriatics, cycloplegics, topical anesthetics, glaucoma medications, drop instillation technique, infection control, ocular anatomy, and patient education.

~15%

Surgical Assisting

Cataract surgery setup, sterile technique, instrument preparation, IOL calculations (SRK/T, IOL Master), and postoperative care assistance.

How to Pass the COT Exam

What You Need to Know

Passing score: Scaled passing score (criterion-referenced)
Assessment: 200 multiple-choice (170 scored + 30 pretest)
Time limit: 3 hours
Exam fee: $250 application fee

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

COT Study Tips from Top Performers

1Focus heavily on diagnostic testing — it accounts for roughly 20% of the exam. Master Goldmann applanation tonometry technique, automated perimetry reliability indices, and OCT interpretation for both macular and glaucoma applications.

2Know your ophthalmic pharmacology cold: mydriatics (tropicamide, phenylephrine), cycloplegics (cyclopentolate, atropine), topical anesthetics (proparacaine), and glaucoma medications (timolol, latanoprost, brimonidine) — mechanisms, uses, and side effects.

3Practice lensometer neutralization: know the proper sequence (sphere first, then cylinder), how to read axis, and how to identify prism. This is a hands-on skill that translates directly to exam questions.

4Understand IOL calculation concepts: axial length measurement (A-scan vs. IOL Master), keratometry, and how these inputs feed into formulas like SRK/T. Know which measurements are critical and how errors affect outcomes.

5Do not neglect motility and binocular vision — cover test interpretation, extraocular muscle actions, cranial nerve innervation (SO4-LR6-rest3), and NPC testing are high-yield topics.

Frequently Asked Questions

What is the COT exam?

The COT (Certified Ophthalmic Technician) exam is a certification offered by IJCAHPO for ophthalmic personnel who have progressed beyond the COA level. It tests advanced clinical skills in refractometry, tonometry, visual fields, imaging, and surgical assisting. The exam has 200 multiple-choice questions completed in 3 hours.

What are the prerequisites for the COT exam?

To be eligible for the COT exam, you must hold a current COA certification, have at least 1 year of full-time ophthalmic clinical experience, and complete an IJCAHPO-approved training program or meet equivalent education and experience requirements.

How much does the COT exam cost?

The COT exam application fee is $250. Additional costs may include study materials ($100-$400) and CE credits for recertification (18 Group A credits every 3 years).

What topics are covered on the COT exam?

The COT exam covers visual assessment, refractometry and lensometry, diagnostic testing (tonometry, visual fields, OCT, photography), ocular motility, ophthalmic pharmacology, patient care, surgical assisting, and documentation. Diagnostic testing is the largest content area.

How do I maintain my COT certification?

COT certification is valid for 3 years. To recertify, you must earn 18 continuing education credits in IJCAHPO-approved Group A categories and submit a recertification application before expiration.