NCT04982107 is a clinical trial in Pupil Diameter, sponsored by He Eye Hospital.

Who is sponsoring NCT04982107?

NCT04982107 is sponsored by He Eye Hospital.

What condition does NCT04982107 study?

NCT04982107 studies Pupil Diameter.

Is NCT04982107 still recruiting?

NCT04982107 is currently completed. Last updated 1 February 2022.

Last reviewed 2022-02-01 · How we verify

NCT04982107

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

Quality of Vision in Implantable Collamer Lens (ICL)

Completed Last updated 1 February 2022

What this trial tests

trial in Pupil Diameter in 70 participants. Completed in 30 September 2021.

Timeline

1 July 2021

Primary endpoint
30 August 2021

30 September 2021

Quick facts

Lead sponsor	He Eye Hospital
Status	Completed
Study type	OBSERVATIONAL
Enrollment	70
Start date	1 July 2021
Primary completion	30 August 2021
Estimated completion	30 September 2021
Sites	1 location across China

Conditions studied

Pupil Diameter — all drugs for Pupil Diameter →

Sponsor

He Eye Hospital

Who can join

Adults 18 to 99, any sex, with Pupil Diameter. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

The aim of this study is to observe the influence of pupil size upon visual outcome in patients with Visian Implantable Collamer Lens(ICL) and toric-ICL implantation.

Publications & conference data

1 peer-reviewed publication reference this trial (live from Europe PMC):

The influence of pupil diameter upon and subjective quality of vision following implantable collamer lens (ICL V4c) implantation: An observational study.
Zhang Q, Wu Y, Huang H, Qin G, et al · · 2023 · cited 6× · PMID 37800803 · DOI 10.1097/md.0000000000035198

Verify or expand the search:

Other He Eye Hospital trials

Trials by the same sponsor.

NCT07097922 — Compare the Clinical Efficacy of 3% Diquafosol and 0.1% Hyaluronic Acid in Patients With Dry Eye After LASIK · NA · not yet recruiting
NCT06852105 — Compare the Clinical Efficacy of 3% Diquafosol and 0.1% Hyaluronic Acid in Patients with Dry Eye After Trans-PRK · NA · not yet recruiting
NCT06714994 — Effect of Spectacle Distribution to Myopic Secondary School Students in Rural Communities of Liaoning Province on Commun · NA · not yet recruiting
NCT06656403 — Effect of Artificial Tears on Ocular Biometry Parameters · NA · not yet recruiting
NCT06537349 — Effects of 3% Diquafosol on Tear Film and Vision-related Quality of Life in Orthokeratology Lens Related Dry Eye · NA · not yet recruiting

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 NCT04982107 (US National Library of Medicine, public domain)
Publications: Europe PMC API search by NCT ID, retrieved 10 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 He Eye Hospital
Last refreshed: 1 February 2022

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/NCT04982107.

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