A parallel controlled, single center clinical study on the effects of different refractive design methods on the rate of glasses-free and visual quality after intraocular lens implantation

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2100051855

Enrollment

Unknown

Registered

2021-10-07

Start date

2021-10-10

Completion date

Unknown

Last updated

2022-06-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

cataract

Interventions

Group 1:Trifocal intraocular lens implanted in both eyes

Group 2:Bifocal intraocular lenses implanted in both eyes

Group 3:Continuous vision intraocular lens implanted in both eyes

Eligibility

Sex/Gender

All

Age

40 Years to 90 Years

Inclusion criteria

Inclusion criteria: 1. Cataract patients with preoperative best corrected visual acuity less than 0.4logMAR, or presbyopic patients who require lens replacement surgery; 2. Corneal astigmatism<=1.0D; 3. The axial range is 22.0mm-26.0mm; 4. The pupil diameter is greater than 3.0mm under moderate lighting; 5. Can follow up on time.

Exclusion criteria

Exclusion criteria: Glaucoma, old iritis, corneal disease, fundus disease, optic nerve disease and other eye diseases.

Design outcomes

Primary

Measure	Time frame
Full naked eye vision at distance (5m), middle (80cm) and near (40cm) distance;Best corrected visual acuity at distance, intermediate and near distance;	—

Secondary

Measure	Time frame
Visual quality index;Wavefront aberration;Defocus curve;Stereopsis;Visual function index scale;Complications;	—

Countries

China

Contacts

Public ContactQin Qin

Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School

qinqin.1219@hotmail.com+86 15005161908

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026