Screeners and diagnosticians
In brief: Irlen Screeners run the first session and choose overlays; Irlen Diagnosticians also choose lens tints and do yearly rechecks. Both are certified by the Institute, which is private training rather than health licensure.[1][7]
Two levels of certification
The Institute certifies two kinds of practitioner. Irlen Screeners can run the first testing session and decide whether someone should be assessed for filters. Irlen Diagnosticians can run both sessions, choose the tint for Irlen Spectral Filters and carry out yearly rechecks.[1]
| Task | Screener | Diagnostician |
|---|---|---|
| Can run first session (screening) | Yes | Yes |
| Can choose overlay color | Yes | Yes |
| Can choose lens tint (filters) | No | Yes |
| Yearly filter rechecks | No | Yes |
| Number stated | Thousands; more than 7,000 educators trained | More than 170 |
Numbers are the Institute’s own and vary between pages.[2][3]
Who can train
The Institute’s training workshop requires a teaching certificate or a graduate degree in education, psychology, counseling, assessment, speech, occupational therapy or rehabilitation, or a health or medical field, or experience with literacy in prisons or a literacy program. Applicants send a resume and a statement of how they will use the training to the chosen location or to the Long Beach headquarters.[4]
Path to diagnostician
The foundation’s 2024 guide says aspiring diagnosticians first train and certify as screeners, then apply to the Institute, and must meet ongoing professional development and recertification requirements.[5] Workshops and an international conference are listed on the Institute’s website.[6]
Certification is not licensure
Irlen certification is training by a private organization. EyeWiki notes that it does not by itself make someone a licensed health professional and that Irlen screening should not replace a comprehensive eye examination.[7] ABC News reported in 2019 that in Australia people go to a licensed Irlen diagnostician rather than a medical professional for the diagnosis.[8]
Screeners in schools
Many screeners are teachers or school staff. The Institute publishes quotations from school districts that trained intervention teachers as screeners and says many districts include screening in their regular testing.[9][10] See Irlen in schools.
Finding one
The Institute’s clinic locator searches by place and distance. The Institute says only a few of its screeners are listed and suggests asking the nearest diagnostician for a screener nearby.[1]
Common questions
What is the difference between an Irlen screener and a diagnostician?
A screener runs the first session and chooses overlays; a diagnostician also chooses lens tints and does yearly rechecks.
Who can become an Irlen screener?
People with a teaching certificate or relevant graduate degree, or literacy-program experience, according to the Institute.
Is an Irlen diagnostician a licensed health professional?
Not by virtue of Irlen certification, which is private training.
Further pages
Citations
- ^ a b c Find an Irlen testing center. Irlen Institute (irlen.com). Retrieved 9 November 2026.
- ^ About the Irlen Institute. Irlen Institute (irlen.com). Retrieved 9 November 2026.
- ^ Published research. Irlen Institute (irlen.com). Retrieved 9 November 2026.
- ^ Qualifications (training workshop). Irlen Institute (irlen.com). Retrieved 9 November 2026.
- ^ How to become an Irlen diagnostician (26 March 2024). Irlen Syndrome Foundation (irlensyndrome.org). Retrieved 9 November 2026.
- ^ The Irlen Institute: home page. Irlen Institute (irlen.com). Retrieved 9 November 2026.
- ^ a b Meares-Irlen syndrome/visual stress (MISViS), reviewed 25 September 2026. EyeWiki, American Academy of Ophthalmology. Retrieved 9 November 2026.
- ^ Irlen syndrome, the condition medical experts say doesn’t exist, promoted to school teachers (26 June 2019). ABC News (Australia). Retrieved 9 November 2026.
- ^ What do the schools say about the Irlen Method?. Irlen Institute (irlen.com). Retrieved 9 November 2026.
- ^ Founder Helen Irlen. Irlen Institute (irlen.com). Retrieved 9 November 2026.