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Key Facts: COT Exam

200

Exam Questions

IJCAHPO COT multiple-choice examination

3 hrs

Exam Time

IJCAHPO testing guidelines

$325

Exam Fee

IJCAHPO fee schedule (one multiple-choice and one Skill Evaluation attempt)

36 mos

Certification Validity

27 CE credits to renew, at least 18 IJCAHPO

100

Practice Questions Here

OpenExamPrep question bank

The IJCAHPO COT exam has two required parts: 200 multiple-choice questions in 3 hours and a computer-simulated Skill Evaluation in seven areas, both taken at Pearson VUE test centers. The largest content area is Ophthalmic Patient Services and Education at 12%. Candidates qualify through an ICA-accredited technician program or as a certified COA, CO or OC(C) with 12 CE credits and qualifying work hours. Certification lasts 36 months and renews with 27 CE credits, at least 18 of them IJCAHPO credits. The COT is the mid-level IJCAHPO credential between COA and COMT.

Sample COT Practice Questions

Try these sample questions to review concepts for the COT exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the standard distance used for Snellen visual acuity testing?
A.10 feet
B.20 feet
C.30 feet
D.40 feet
Explanation: The Snellen chart is standardized for testing at 20 feet (6 meters). At this distance, the optotypes subtend specific visual angles that correspond to normal visual acuity (20/20). Testing at a non-standard distance would invalidate the results unless properly converted.
2A patient reads the 20/40 line on the Snellen chart. What does this mean?
A.The patient can see at 40 feet what a normal person sees at 20 feet
B.The patient can see at 20 feet what a normal person sees at 40 feet
C.The patient has 40% of normal vision
D.The patient needs a +4.00 D lens correction
Explanation: A Snellen acuity of 20/40 means the patient must be at 20 feet to read what a person with normal vision can read at 40 feet. The numerator is the testing distance and the denominator is the distance at which a normal eye can read the same line. This indicates reduced visual acuity compared to 20/20.
3Which instrument is used to measure intraocular pressure (IOP)?
A.Phoropter
B.Tonometer
C.Keratometer
D.Lensometer
Explanation: A tonometer measures intraocular pressure, which is essential for glaucoma screening and management. Common types include Goldmann applanation, non-contact (air puff), and Tono-Pen. The phoropter is used for refraction, the keratometer measures corneal curvature, and the lensometer measures lens power.
4What topical anesthetic is most commonly used before Goldmann applanation tonometry?
A.Tetracaine
B.Proparacaine
C.Lidocaine
D.Bupivacaine
Explanation: Proparacaine 0.5% is the most commonly used topical anesthetic in ophthalmology due to its rapid onset (within 20 seconds), short duration, and minimal stinging. It is typically combined with fluorescein dye for Goldmann applanation tonometry. Tetracaine is an alternative but causes more stinging.
5The notation 'OD' refers to which eye?
A.Left eye
B.Right eye
C.Both eyes
D.Neither eye
Explanation: OD stands for 'oculus dexter,' the Latin term for right eye. OS (oculus sinister) refers to the left eye, and OU (oculi uterque) refers to both eyes. These abbreviations are fundamental to ophthalmic documentation and must be used correctly to prevent errors in treatment.
6Which type of visual field test uses a bowl-shaped perimeter with a single stimulus of varying intensity?
A.Confrontation visual field
B.Tangent screen
C.Automated static perimetry
D.Goldmann kinetic perimetry
Explanation: Automated static perimetry (such as the Humphrey Visual Field Analyzer) uses a bowl-shaped perimeter and presents stimuli of varying intensity at fixed locations to map the visual field. Goldmann perimetry uses moving targets (kinetic), confrontation is a gross screening method, and the tangent screen tests the central 30 degrees using a flat surface.
7What is the normal range for intraocular pressure?
A.5-10 mmHg
B.10-21 mmHg
C.22-30 mmHg
D.30-40 mmHg
Explanation: Normal intraocular pressure ranges from 10-21 mmHg, with an average of approximately 15-16 mmHg. Pressures above 21 mmHg are considered elevated and may indicate glaucoma risk, though some patients develop glaucoma at normal pressures (normal-tension glaucoma) and others tolerate higher pressures without damage.
8A lensometer is used to measure which of the following?
A.Corneal curvature
B.The power of a spectacle lens
C.Intraocular pressure
D.Pupil diameter
Explanation: A lensometer (also called a lensmeter or vertometer) measures the power of a spectacle lens, including sphere, cylinder, axis, prism, and optical center. This measurement is essential for verifying prescriptions and documenting a patient's current correction. Corneal curvature is measured with a keratometer.
9Which dye is used in conjunction with a cobalt blue light to evaluate corneal abrasions?
A.Rose bengal
B.Fluorescein sodium
C.Indocyanine green
D.Lissamine green
Explanation: Fluorescein sodium is a water-soluble dye that stains areas of epithelial disruption and is viewed under cobalt blue light. It pools in corneal defects (abrasions, ulcers) creating a bright green fluorescence. Rose bengal and lissamine green stain devitalized cells, while indocyanine green is used for choroidal angiography.
10What does a keratometer measure?
A.Anterior chamber depth
B.Corneal curvature
C.Lens thickness
D.Axial length of the eye
Explanation: A keratometer measures the curvature of the central cornea (approximately the central 3 mm). The readings, expressed in diopters or millimeters of radius, are used to fit contact lenses, calculate IOL power, and detect corneal astigmatism. Axial length is measured by A-scan ultrasonography.

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.

Exam sponsor: IJCAHPO / Pearson VUE test centers. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

200 multiple-choice questions plus a computer-simulated Skill Evaluation in seven areas

Time Limit

3 hours (initial Skill Evaluation: 120 minutes)

Passing Score

Scaled passing score (criterion-referenced)

Exam / Certification Fees

$325 application fee

Exam sponsor website

Reported exam pass rate: Not publicly disclosed by IJCAHPO. IJCAHPO does not publish pass rate data Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

3%

History and Documentation

Ocular, medical, medication, social and family history

7%

Visual Assessment

Visual acuity at all levels, optotypes, pinhole, stereoacuity, near point and low vision devices

3%

Visual Field Testing

Amsler grid, confrontation fields, automated and Goldmann perimetry

4%

Pupil Assessment

Measuring and comparing pupils, shape and RAPD

4%

Tonometry

Intraocular pressure by applanation, hand-held and non-contact tonometers; disinfecting tonometers

3%

Keratometry

Automated and manual keratometry

6%

Ocular Motility Testing

Versions and ductions, near point, cover tests, prisms, Worth 4-Dot, Maddox rod, Krimsky, stereoacuity and nystagmus

3%

Lensometry

Automated and manual neutralization, Fresnel, ground-in prism and slab-off

5%

Refraction, Retinoscopy & Refinement

Automated refraction, retinoscopy, fogging, duochrome, binocular balance, vertex distance, transposition and near add

5%

Biometry

Diagnostic and standardized A-scan and B-scan

2%

Supplemental Testing

Glare, potential acuity, slit lamp use, color plates, pachymetry, angiography phases, electrophysiology and tear tests

3%

Microbiology

Types of microorganisms, disease transmission, specimen collection and infection control

3%

Pharmacology

Drug delivery, prescriptions, instilling drops and the main ophthalmic drug classes

6%

Surgical Assisting

Instruments, aseptic technique, sterilization, injections, YAG laser and laser safety

12%

Ophthalmic Patient Services and Education

Communication, patient education, eye dressings and shields, first aid, patient flow, vital signs and CPR

5%

General Medical Knowledge

Ocular anatomy, body systems, eye diseases, medical terminology and safety

5%

Optics and Spectacles

Transposition, prescriptions and vertex distance

5%

Contact Lenses

Lens types, wearing schedules, care systems and fitting soft, rigid, toric and bifocal lenses

7%

Ophthalmic Imaging

Fluorescein angiography, corneal topography, HRT and OCT

6%

Photography and Videography

Slit lamp and anterior segment, fundus and external photography

1%

Equipment Maintenance and Repair

Batteries, calibration, cleaning lenses and prisms, and supplies

2%

Medical Ethics, Legal and Regulatory Issues

Coding, rules and regulations, quality assurance, scribing, confidentiality and informed consent

Preparing for the COT Exam

What You Need to Know

  • Passing score: Scaled passing score (criterion-referenced)
  • Assessment: 200 multiple-choice questions plus a computer-simulated Skill Evaluation in seven areas
  • Time limit: 3 hours (initial Skill Evaluation: 120 minutes)
  • Exam / certification fees: $325 application fee Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

COT: Suggested Study Strategy

1Plan around the published weights: Ophthalmic Patient Services and Education is 12%, while Visual Assessment and Ophthalmic Imaging are 7% each. 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 at the technician level. It has two required parts: 200 multiple-choice questions in 3 hours and a computer-simulated Skill Evaluation in seven areas.

What are the prerequisites for the COT exam?

You must complete one IJCAHPO pathway: an ICA-accredited technician-level training program; current COA plus 12 IJCAHPO CE credits and 2,000 hours as a COA within 24 months; current CO or OC(C) plus 12 CE credits and 2,000 hours within 24 months; or the COA Fast Track with 12 CE credits and 6,000 hours of non-certified work under an ophthalmologist.

How much does the COT exam cost?

The COT application fee is $325, which covers one multiple-choice attempt and one Skill Evaluation attempt. Retests are $275 and then $150 for the multiple-choice exam and $85 for the Skill Evaluation. Other costs may include study materials ($100-$400) and CE credits for recertification.

What topics are covered on the COT exam?

The COT outline has 22 content areas. The largest is Ophthalmic Patient Services and Education at 12%, followed by Visual Assessment and Ophthalmic Imaging at 7% each, and Ocular Motility Testing, Surgical Assisting, and Photography and Videography at 6% each.

How do I maintain my COT certification?

COT certification is valid for 36 months. To recertify, submit 27 CE credits, at least 18 of them IJCAHPO credits, with the recertification application and fee, or retest instead.