Comparison of Formulas for IOL Power Calculation after Corneal Refractive Surgery

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Observational

Source

ChiCTR

Registry ID

ChiCTR2300070155

Enrollment

Unknown

Registered

2023-04-03

Start date

2022-02-15

Completion date

Unknown

Last updated

2023-05-29

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

Conditions

Cataract

Interventions

Eyes after refractive surgery (42 patients):None

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Previous history of excimer laser corneal refractive surgery; 2. No contraindications to surgery; 3. No eye diseases other than cataracts that affect vision; 4. Patients can go back to the hospital for vision test one month after surgery.

Exclusion criteria

Exclusion criteria: None.

Design outcomes

Primary

Measure	Time frame
Eyesight test;	—

Secondary

Measure	Time frame
AL, Axial length;ACD, anterior chamber depth;K, keratometry;mTNP, mean true net power;LT, lens thickness;	—

Countries

China

Contacts

Public ContactHuang Yusen

Qingdao Eye Hospital of Shandong First Medical University

huang_yusen@126.com+86 13791802251

Outcome results

None listed

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