NCT03841253 is a NA clinical trial of Trans-epithelial PTK in Corneal Astigmatism, sponsored by London Vision Clinic.

Who is sponsoring NCT03841253?

NCT03841253 is sponsored by London Vision Clinic.

What drugs are being tested in NCT03841253?

Interventions in NCT03841253: Trans-epithelial PTK, Trans-epithelial PTK (retrospective data collection), EpiMaster Application Software.

What condition does NCT03841253 study?

NCT03841253 studies Corneal Astigmatism.

Is NCT03841253 still recruiting?

NCT03841253 is currently active, enrolled. Last updated 12 February 2026.

Last reviewed 2026-02-12 · How we verify

NCT03841253

Name: Drug Landscape Pharmaceutical Database
Creator: Drug Landscape
Published: 2026-01-01
License: https://creativecommons.org/licenses/by/4.0/

Treatment of Vision Disturbances Due to Corneal Irregularities by Trans-epithelial Optical Phototherapeutic Keratectomy (TE-oPTK)

Active, enrolled NA Last updated 12 February 2026

What this trial tests

NA trial testing Trans-epithelial PTK in Corneal Astigmatism in 45 participants. Participants enrolled and being followed up; not accepting new ones.

Timeline

1 August 2019

Primary endpoint
1 March 2028

1 November 2028

Quick facts

Lead sponsor	London Vision Clinic
Phase	NA
Status	Active, enrolled
Study type	INTERVENTIONAL
Allocation	non randomized
Design	parallel
Masking	none
Primary purpose	treatment
Enrollment	45
Start date	1 August 2019
Primary completion	1 March 2028
Estimated completion	1 November 2028
Sites	1 location across United Kingdom

Drugs / interventions tested

Trans-epithelial PTK
Trans-epithelial PTK (retrospective data collection)
EpiMaster Application Software

Conditions studied

Corneal Astigmatism — all drugs for Corneal Astigmatism →

Sponsor

London Vision Clinic

Who can join

Adults 21 to 70, any sex, with Corneal Astigmatism. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

This study sets out to evaluate the EpiMaster application software for use in predicting the refractive change induced by a trans-epithelial phototherapeutic keratectomy (TE-PTK) procedure in eyes with irregularly irregular astigmatism. If validation criteria are met during the observational phase, the software refractive prediction will be used to plan the refractive correction in TE-PTK treatments.

Publications & conference data

No peer-reviewed publications indexed yet for this trial.

Verify or expand the search:

Other recruiting trials for Corneal Astigmatism

Currently open trials in the same condition.

NCT07081919 — Effectiveness, Stability and Influence Factors of Femtosecond Laser Assisted Cataract Surgery · recruiting
NCT04251143 — Dresden Corneal Disease and Treatment Study · recruiting

Other London Vision Clinic trials

Trials by the same sponsor.

NCT03473847 — Repeatability, Reproducibility and Comparison of Cirrus OCT, RTVue OCT, MS-39 OCT, and Insight 100 VHFDU · NA · suspended
NCT02519985 — Repeatability and Reproducibility of the ArcScan Insight 100 VHF Digital Ultrasound · NA · suspended

Verify against primary sources

ClinicalTrials.gov — authoritative US registry record
WHO ICTRP — international registry index
EU Clinical Trials Register
Sponsor press releases (Google)

Data sources for this page

Trial protocol + status: ClinicalTrials.gov NCT03841253 (US National Library of Medicine, public domain)
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by London Vision Clinic
Last refreshed: 12 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/NCT03841253.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing