137+ Free OCT-C Practice Questions

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Key Facts: OCT-C Exam

Passing Score

OPS BOC 0–100 scale

$465

Exam Fee

Non-member, includes 1-yr OPS

$220–225

Retest Fee

Official sources conflict; confirm with OPS

3 years

Recertification Cycle

OPS BOC

8 CECs

Recertification Credits

4+ OPS-approved required

ISO Quality

Testing Provider

Testing contractor

The OPS Board of Certification requires a Program Application, accepted OCT portfolio, at least 1 year of employer-verified OCT work responsibilities, and a passing written examination. The exam has 100 four-option questions, a 2-hour limit, and a passing scaled score of 70. Fees are $340 for OPS members or $465 for non-members. Recertification requires retesting or 8 CECs every 3 years, with at least 4 CECs from official OPS or pre-approved activities.

Sample OCT-C Practice Questions

Try these sample questions to test your OCT-C exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 137+ question experience with AI tutoring.

1OCT uses low-coherence interferometry to generate images. What property of light makes this technique possible?

A.High temporal coherence of laser diodes

B.Short coherence length from broadband light

C.Polarization of infrared laser beams

D.Doppler frequency shift of reflected photons

Explanation: Low-coherence interferometry exploits the very short coherence length of broad-bandwidth light. Interference fringes only form when path lengths of reference and sample beams match within micrometers, enabling axial depth resolution of ~5–10 µm.

2Time-domain OCT (TD-OCT) achieves depth scanning by moving the reference mirror. What is its primary speed limitation compared with spectral-domain OCT?

A.Lower light source bandwidth

B.Reference-mirror motion

C.Absence of a CCD detector array

D.Inability to detect infrared wavelengths

Explanation: TD-OCT mechanically translates the reference mirror to sample optical delay sequentially, which limits acquisition speed. Fourier-domain systems recover all sampled depths from each detected spectrum and are much faster than historical clinical TD-OCT systems.

3Retinal SD-OCT commonly uses light near 840 nm. Why is this spectral region useful?

A.Maximum absorption by oxyhemoglobin

B.Retinal penetration with fine resolution

C.Minimum reflection from the vitreous

D.Peak fluorescence excitation of lipofuscin

Explanation: Near 840 nm provides useful transmission through ocular media and retinal tissue while broadband sources can still provide micrometer-scale axial resolution. Center wavelength affects penetration, while source bandwidth chiefly determines axial resolution.

4Swept-source OCT (SS-OCT) typically uses a ~1050 nm center wavelength. What primary advantage does this confer over 840 nm SD-OCT?

A.Better axial resolution in the inner retina

B.Deeper signal penetration into the choroid

C.Higher lateral resolution at the fovea

D.Faster acquisition from wavelength alone

Explanation: Longer-wavelength swept-source systems near 1050 nm generally scatter less in tissue and can preserve signal deeper beneath the RPE, improving visualization of the choroid and sclera. Scan speed and resolution still depend on the complete system design.

5In OCT terminology, a single depth profile of reflectivity along the beam axis is called:

A.B-scan

B.A-scan

C.Volume cube

D.En-face slice

Explanation: An A-scan is one axial depth profile of tissue reflectivity acquired from a single beam position. Multiple laterally displaced A-scans compose a B-scan cross-section.

6Axial resolution in OCT is primarily determined by:

A.Numerical aperture of the focusing objective

B.The source coherence length

C.Scan speed of the galvanometer mirror

D.Signal-to-noise ratio of the detector

Explanation: For a Gaussian source spectrum, axial resolution scales approximately with the square of center wavelength divided by source bandwidth, with tissue refractive index also affecting the physical resolution. Broader bandwidth produces a shorter coherence gate and finer axial resolution.

7Lateral resolution in retinal OCT is limited primarily by:

A.Source bandwidth

B.Pupil and focusing optics

C.Reference mirror position

D.CCD pixel size in the spectrometer

Explanation: Lateral resolution is set by the focused beam spot on the retina, which depends on wavelength, beam diameter, ocular optics, and focus. Source bandwidth chiefly controls axial resolution.

8A volume cube OCT acquisition covers 6 × 6 mm with 512 B-scans each containing 512 A-scans. What does this data set allow that a single cross-sectional B-scan cannot?

A.Higher axial resolution per A-scan

B.Volume and en-face reconstruction

C.Longer total imaging depth range

D.Reduced motion artifact per B-scan

Explanation: A volume cube captures all three spatial dimensions, enabling en-face (C-scan) slabs at chosen depths, thickness maps, and 3-D rendering — impossible from a single 2-D B-scan.

9The innermost retinal boundary detectable by OCT corresponds to which anatomical structure?

A.Internal limiting membrane

B.Nerve fiber layer (NFL)

C.Ganglion cell layer (GCL)

D.Inner plexiform layer (IPL)

Explanation: The ILM is the vitreoretinal interface — the highly reflective inner surface of the retina — and appears as the first bright hyperreflective line from the vitreal side on OCT B-scans.

10On SD-OCT, the ellipsoid zone (EZ) represents the reflective band corresponding to which photoreceptor substructure?

A.Inner-segment ellipsoid region

B.Outer nuclear layer nuclei

C.External limiting membrane junctional complex

D.Bruch's membrane collagen matrix

Explanation: The EZ corresponds to the highly organized mitochondria-rich inner segment ellipsoid region at the IS/OS junction, producing a bright hyperreflective band. It was renamed from 'IS/OS line' in 2014 to reflect anatomical accuracy.

About the OCT-C Exam

The OCT-C certifies ophthalmic imaging professionals in optical coherence tomography. Its 100-question, 2-hour closed-book examination follows seven official domains: Anatomy of the Eye (15%), Pathology of the Eye in OCT Findings (25%), Patient Management (5%), OCT Hardware and Software (28%), Data and Image Management (3%), Analysis and Interpretation of OCT (20%), and Patient and Operator Safety (4%). Eligibility requires an accepted applicant-produced OCT portfolio and employer verification of at least 1 year of OCT work responsibilities.

Questions

100 scored questions

Time Limit

2 hours

Passing Score

70 scaled score (0–100 scale)

Exam Fee

$340 OPS member / $465 non-member; official retest sources conflict at $220–225 (OPS Board of Certification / ISO Quality Testing)

OCT-C Exam Content Outline

15%

Anatomy of the Eye

Anterior and posterior segment structures, retinal layers, optic-nerve anatomy, anatomical landmarks, and terminology

25%

Pathology of the Eye in OCT Findings

Ocular and systemic disease manifestations across retinal, optic-nerve, anterior-segment, and vitreoretinal OCT findings

Patient Management

Procedure communication, fixation and cooperation, pupil assessment, and review of relevant records and history

28%

OCT Hardware and Software

Equipment technology, machine functions and limitations, maintenance, scanning protocols, controls, scan placement, and acquisition technique

Data and Image Management

Storage, archive and retrieval, backup and disaster recovery, network transfer, and image/data export

20%

Analysis and Interpretation of OCT

Retinal, optic-nerve, glaucoma, and anterior-segment analysis; measurements, signal quality, shadowing, and artifacts

Patient and Operator Safety

Universal and manufacturer precautions, OSHA and NIOSH requirements, and HIPAA privacy

How to Pass the OCT-C Exam

What You Need to Know

Passing score: 70 scaled score (0–100 scale)
Exam length: 100 questions
Time limit: 2 hours
Exam fee: $340 OPS member / $465 non-member; official retest sources conflict at $220–225

Keys to Passing

Work through all 137 available questions
Review every answer and explanation
Track weak areas and revisit them
Use our AI tutor for tough concepts

OCT-C Study Tips from Top Performers

1Allocate study time by the seven official weights, especially Hardware and Software (28%), Pathology (25%), and Analysis and Interpretation (20%)

2Learn anterior and posterior segment structures, retinal layers, optic-nerve anatomy, and the landmarks used to place and evaluate scans

3Practice recognizing the posterior-segment pathologies expressly listed in the OPS content outline

4Understand OCT equipment concepts, device limitations, maintenance, controls, and retina and optic-nerve scanning protocols

5Practice patient communication, fixation, cooperation, pupil assessment, and review of relevant clinical and imaging history

6Interpret retinal, optic-nerve, glaucoma, and anterior-segment outputs while checking signal quality, shadowing, measurement, and plotting errors

7Distinguish motion, inversion, sampling, vibration, tear-film, media-opacity, and dirty-lens artifacts

8Review storage, backup, retrieval, network transfer, export, and disaster-recovery responsibilities

9Review universal and manufacturer precautions, workplace-safety requirements, and HIPAA privacy

10Use the February 2026 OCT-C Program Guide v3.2 as the authoritative content outline

Frequently Asked Questions

What is the OCT-C certification?

The OCT-C (Optical Coherence Tomographer-Certified) is awarded by the OPS Board of Certification to professionals who demonstrate OCT competence. It requires an accepted OCT portfolio, qualifying work experience, and a passing written examination administered through ISO Quality Testing.

What are the OCT-C eligibility requirements?

Candidates first submit the OCT-C Program Application, then an applicant-produced portfolio that meets OPS BOC standards. After portfolio acceptance, they submit the examination application and an employer letter verifying at least 1 year of OCT work responsibilities. OPS membership is encouraged but not required.

What is the OCT-C passing score?

The OPS BOC uses a 0–100 scaled score model with 70 as the passing score. Raw scores are converted to this scale to account for exam form difficulty variation across administrations.

How much does the OCT-C exam cost?

The exam fee is $340 for OPS members or $465 for non-members; the non-member fee includes an optional one-year OPS membership. The current requirements page and the guide's retesting policy list $220 per retest, while the guide's fee table lists $225, so candidates should confirm the current charge with OPS.

How long is OCT-C certification valid?

OCT-C certification uses a 3-year cycle beginning January 1 of the year after certification. Recertification is available by retesting or by earning 8 CECs, including at least 4 from official OPS or OPS BOC pre-approved courses and workshops. Current fees are $100 for members or $225 for non-members, plus a $25 late fee when applicable.

What content is on the OCT-C exam?

The seven official domains are Anatomy of the Eye (15%), Pathology of the Eye in OCT Findings (25%), Patient Management (5%), OCT Hardware and Software (28%), Data and Image Management (3%), Analysis and Interpretation of OCT (20%), and Patient and Operator Safety (4%).

Where is the OCT-C exam administered?

The OCT-C examination is offered year-round at OPS-approved test centers in the United States and internationally through ISO Quality Testing. Candidates receive scheduling instructions only after completing the portfolio, application, employment-verification, and payment steps.