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About this exam

The Certified Low Vision Therapist (CLVT®) credential is issued by the Academy for Certification of Vision Rehabilitation & Education Professionals (ACVREP), an independent, not-for-profit certification body established on November 6, 1999. ACVREP describes the CLVT as a professional who uses functional vision evaluation instruments to assess visual acuity, visual fields, contrast sensitivity function, color vision, stereopsis, visual perceptual and visual motor functioning, and literacy skills in reading and writing as they relate to vision impairment and disability. The CLVT also evaluates work history, educational performance, ADL and IADL performance, use of technology, quality of life, and aspects of psychosocial and cognitive function, and instructs clients in the use of prescribed low vision devices. The credential is intended for vision rehabilitation practitioners who perform these evaluations and device-training services. Because ACVREP builds its certification standards through Subject Matter Expert Committees and publishes a CLVT Certification Handbook along with a Scope of Practice and Body of Knowledge & Competencies, candidates should treat those documents as the authoritative study framework. ACVREP also offers a CLVT practice exam and strongly recommends that all potential candidates read the applicable certification handbook before applying. Preparation should combine handbook review, practice-exam familiarization, and supervised clinical experience reflected in the Clinical Competency Evaluation.

What you'll study

Common questions

About ACVREP CLVT preparation

Who issues the CLVT credential, and is this site affiliated with them?

The credential is issued by ACVREP, the Academy for Certification of Vision Rehabilitation & Education Professionals, a private not-for-profit organization established November 6, 1999. This study platform is independent and is not affiliated with, endorsed by, or sponsored by ACVREP. Always confirm requirements on ACVREP's own site and in the current CLVT Certification Handbook.

What content does the CLVT exam cover?

ACVREP's CLVT description frames the role around functional vision evaluation: visual acuity, visual fields, contrast sensitivity function, color vision, stereopsis, visual perceptual and visual motor functioning, and literacy skills in reading and writing as related to vision impairment. It also covers evaluating work history, educational performance, ADL and IADL performance, technology use, quality of life, and psychosocial and cognitive function, plus instruction in prescribed low vision devices.

How many questions are on the exam and how long is it?

ACVREP's public CLVT and main pages do not state a question count, time limit, or passing score. Rather than rely on secondhand figures, check the CLVT Certification Handbook and your scheduling confirmation, which state the exam's structure and any time allowances. Plan your practice pacing once you have those official numbers.

What happens if I fail on my first attempt?

ACVREP states that if you do not pass the exam the first time you are allowed one free retake. Once you are notified that you failed, log into your account and select Schedule your Exam; the database recognizes the second attempt as the free retake and you are not charged a fee. Confirm current details in your account before scheduling.

How long must I wait before I can schedule the exam?

ACVREP uses a scheduling procedure that allows candidates to sit for the certification examination following a mandatory 30 calendar day waiting period, or any business day thereafter based on candidate preference. Note also that if you schedule a date and then want to change it, the system requires you to wait another 30 days, so pick your date carefully.

How long does eligibility review take after I apply?

ACVREP asks you to allow 5 days for review of your application to determine it is complete. If documentation is missing, you will be notified by email that missing information is being requested. Category 1 graduates and Category 2 applicants should have the signed Clinical Competency Evaluation uploaded and an official university transcript received before expecting an eligibility decision.

I need testing accommodations or a private proctor. What is the process?

Check the accommodations or private proctoring box on the Exam Registration Form and you will be asked to provide three preferred dates, times, and locations. You must also create a Test Taker Account, because ACVREP cannot schedule your exam until that account exists. Upload the required documentation from a physician or school counselor; ACVREP cannot schedule you until all supporting documents are received.

How long does an accommodation request take to process?

ACVREP asks you to allow seven business days for processing your request and providing confirmation of location, date, and time. Because scheduling also depends on your Test Taker Account and complete supporting documentation, submit the physician or school counselor document early rather than close to your preferred test date.

In what order should I study for the CLVT exam?

Start with ACVREP's Scope of Practice and Body of Knowledge & Competencies, then read the CLVT Certification Handbook. Build domain-by-domain notes covering functional vision evaluation, evaluation of work, educational, ADL/IADL, technology, quality-of-life and psychosocial/cognitive factors, and instruction in prescribed low vision devices. Finish with the ACVREP practice exam to identify weak areas, then revisit those sections.

What are common reasons candidates struggle?

Two recurring problems are studying from memory or outdated third-party summaries instead of the current handbook, and skipping hands-on device instruction content in favor of evaluation theory. A third is administrative: incomplete Clinical Competency Evaluation forms, missing official transcripts, or no Test Taker Account, any of which delays eligibility or scheduling regardless of exam readiness.