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NCT04318106
Reading; Through the Eyes of a University Student
NA trial testing Precision tinted spectacle lenses in Visual Stress in 72 participants. Completed in 30 June 2025.
30 June 2025
Quick facts
| Lead sponsor | University of Ulster |
|---|---|
| Phase | NA |
| Status | Completed |
| Study type | INTERVENTIONAL |
| Allocation | randomized |
| Design | crossover |
| Masking | double |
| Primary purpose | treatment |
| Enrollment | 72 |
| Start date | 27 January 2020 |
| Primary completion | 30 June 2025 |
| Estimated completion | 30 June 2025 |
| Sites | 1 location across United Kingdom |
Drugs / interventions tested
- Precision tinted spectacle lenses
Conditions studied
- Visual Stress — all drugs for Visual Stress →
- Meares-Irlen Syndrome — all drugs for Meares-Irlen Syndrome →
- Reading Difficulties — all drugs for Reading Difficulties →
Sponsor
University of Ulster
Who can join
Adults 18 to 45, any sex, with Visual Stress or Meares-Irlen Syndrome. Patients with the condition only — healthy volunteers not accepted.
Sponsor's own description
This is a double-masked randomized controlled trial which aims to assess the effects of precision tinted spectacle lenses on visual stress symptoms within an undergraduate University student population.
Publications & conference data
2 peer-reviewed publications reference this trial (live from Europe PMC):
-
Reading through the eyes of a university student: A double-masked randomised placebo-controlled cross-over protocol investigating coloured spectacle lens efficacy in adults with visual stress.
Harkin DL, Little JA, McCullough SJ. · · 2025 · cited 1× · PMID 40587476 · DOI 10.1371/journal.pone.0309625 -
Reading; through the eyes of a university student: A double-masked randomised placebo-controlled cross-over protocol investigating coloured spectacle lens efficacy in adults with visual stress.
Harkin DL, Little J, McCullough SJ. · · 2024 · DOI 10.1101/2024.08.18.24312188
Verify or expand the search:
- PubMed search for NCT04318106
- Europe PMC full search
- ASCO Meeting Library
- ESMO Meeting Library
- bioRxiv preprints
- medRxiv preprints
- Google Scholar
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Verify against primary sources
- ClinicalTrials.gov — authoritative US registry record
- WHO ICTRP — international registry index
- EU Clinical Trials Register
- Sponsor press releases (Google)
- Trial protocol + status: ClinicalTrials.gov NCT04318106 (US National Library of Medicine, public domain)
- Publications: Europe PMC API search by NCT ID, retrieved 9 June 2026
- Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
- Sponsor: as reported to ClinicalTrials.gov by University of Ulster
- Last refreshed: 19 February 2026
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT04318106.
Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing