What Is A CRA?

The Short Answer: Certified Retinal Angiographer

In this context, a CRA is a Certified Retinal Angiographer: an ophthalmic imaging professional who has met the Ophthalmic Photographers' Society Board of Certification's standards for performing retinal angiography and related diagnostic imaging. The acronym is shared by several unrelated credentials in other industries, so it is worth being precise. Everything on this page, and everything on this site, concerns the retinal imaging credential and nothing else.

The credential signals that a photographer or technician can capture diagnostic-quality images of the back of the eye, run dye-based angiography safely, and manage the patient through the procedure. If you are exploring the broader picture, our related explainers on CRA certification, what CRA stands for, and CRA meaning approach the same question from different angles.

What a Retinal Angiographer Actually Does

A retinal angiographer produces the images that retina specialists use to diagnose and monitor disease. The work blends photography, patient care, and clinical knowledge. A typical day may include:

• Capturing color fundus photographs with a fundus camera or scanning laser ophthalmoscope (SLO)
• Performing fluorescein angiography, which tracks dye through the retinal and choroidal circulation to reveal leakage, blockage, and abnormal vessels
• Performing indocyanine green (ICG) angiography when deeper choroidal detail is needed
• Acquiring fundus autofluorescence and monochromatic images
• Managing patients before, during, and after dye injection, including recognizing and responding to adverse reactions
• Organizing, labeling, and archiving image data so clinicians can retrieve and compare studies over time

Because the images drive treatment decisions for conditions such as diabetic retinopathy, macular degeneration, and vascular occlusions, technical quality matters. A missed phase of an angiogram cannot simply be repeated without re-injecting the patient, which is why the certification emphasizes both technique and judgment.

Who Issues the Credential

The credential is administered by the Ophthalmic Photographers' Society (OPS) Board of Certification. The board publishes a CRA Program Guide that defines eligibility, the examination blueprint, scoring approach, fees, and recertification rules. The version governing current candidates is Version 15.1, effective June 2026. Its ten weighted content areas are the official exam objectives, drawn from a 2017 job analysis of the profession, so they are not merely a suggested curriculum.

The Ten Content Areas the Exam Measures

The examination is organized into ten weighted domains. Understanding the weighting is the single most useful piece of strategic information a candidate has. For a deeper walkthrough, see our complete guide to all 10 CRA content areas.

The two heavyweight domains

The supporting domains

The anatomy, physiology, and pathology domain (16%) is where clinical knowledge meets imaging: you need to know what normal looks like before you can recognize and document what is abnormal. General photography (10%) covers optical and photographic principles that underlie all of the specialized techniques. Patient management and safety (6%) and pharmacology (5%) are smaller in weight but matter disproportionately in practice, since they cover dye reactions, contraindications, and the medications used in the imaging suite.

Monochromatic imaging and autofluorescence (5%), data and image management (4%), ICG angiography (3%), and other imaging technology (3%) round out the blueprint. Do not ignore the small domains: a handful of questions from each can decide a borderline result, and ICG in particular reuses concepts from fluorescein work with important differences in dye properties and imaging wavelengths.

How the Written Exam Works

The written examination is delivered by computer at Prometric test centers. The key format facts are:

• 175 multiple-choice questions, each with four choices and one correct or best answer
• Two-hour time limit, which works out to well under a minute per question on average
• Closed book: no outside references, personal calculators, or electronics; scratch paper and a pencil are supplied
• Valid government photo ID required at check-in
• No separate guessing penalty: incorrect and blank answers simply earn no credit, so answer every question
• The OPS does not separately disclose how many questions are scored versus unscored

Scoring is criterion-referenced, using a modified Angoff method to set a competency standard, with results reported on a scaled basis. Candidates who pass receive a pass notice without a numeric score; candidates who do not pass receive a scaled score along with a diagnostic report by content area. Initial results are provisional pending a 72-hour statistical verification. No current numeric cut score has been publicly verified, so be skeptical of any site that claims to know one. Our article on the CRA passing score explains what is and is not publicly known.

Eligibility, the Portfolio, and Provisional Status

This is the part that surprises many first-time applicants: the CRA is not an exam you can simply register for. Eligibility is built around demonstrated experience, and the review happens before you sit for the written test. Requirements include:

• An accepted applicant-produced imaging portfolio demonstrating your own work
• Verification by your employing physician or institution of two years of retinal-angiography experience
• Current CPR, including a current in-person skills assessment

Certain education or professional credentials can substitute for up to one year of the experience requirement. Candidates who are still working toward the experience requirement can hold a distinct Provisional CRA status. No mandatory OPS preparation course and no universal training-hour total has been verified, so how you build your skills is largely up to you and your workplace.

Fees, Recertification, and Continuing Education

Initial fees

The $50 non-refundable application component is included in the initial fee rather than charged on top of it. For a fuller breakdown, see the complete CRA certification cost guide.

The three-year renewal cycle

Certification runs on a three-year cycle that begins January 1 of the year after you earn the credential. To renew, you have two routes:

1. Continuing education: earn 15 CECs during the cycle, including at least five from attending official OPS or OPS Board of Certification pre-approved courses or workshops. Teaching, eligible non-OPS-approved attendance, and publication categories are each capped at ten credits, and eligible non-OPS attendance earns 0.5 CEC per hour.
2. Retest: retake the examination by the end of year three. This route requires the examination fee with no additional recertification fee.

One wrinkle to watch: live OPS recertification pages call for current CPR and accept specified American Heart Association or American Red Cross online refresher testing for renewal, while the June 2026 guide's renewal checklist does not mention CPR. That discrepancy has not been resolved publicly, so confirm the current renewal CPR expectation directly with OPS and do not assume the requirement has been dropped. Do not confuse it with the in-person CPR skills assessment required for initial certification.

Where Certified Retinal Angiographers Work

Retinal angiographers are employed wherever retina disease is diagnosed and managed. Typical settings include:

• Retina specialty practices, where angiography volume is highest
• Comprehensive ophthalmology groups with in-house imaging suites
• University eye institutes and academic medical centers, often alongside clinical research imaging
• Hospital-based ophthalmology departments
• Clinical trial and reading-center settings that require standardized, protocol-driven imaging

Because the employing physician or institution must verify your experience for eligibility, most candidates are already working in one of these environments when they apply. For a look at openings and career paths, browse our overview of CRA jobs, and for compensation context see the CRA salary guide. If you are weighing the investment, our analysis of whether the CRA certification is worth it lays out the tradeoffs without inflated claims.

Sequencing Your Preparation by Domain Weight

Because the blueprint is so heavily weighted toward two domains, a CRA-specific plan should front-load those areas and then layer in the clinical and safety material. Here is one way to schedule an eight-week runway that matches the application timeline:

Reserve your final stretch for timed, full-length practice so the two-hour pace feels routine. You can work through realistic question styles on the CRA practice test, and our CRA study guide and one-page CRA cheat sheet are useful companions for structuring review. When you miss a question, note which of the ten domains it came from; that mirrors the diagnostic content-area report OPS gives candidates who do not pass, and it points you to where to spend your next session. You can also start with a free set of questions on the main practice site to see where you stand.

Frequently Asked Questions