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Accuracy of Toric intraocular lens implantation using three-random-point marking method: A prospective pilot study

Accuracy of Toric intraocular lens implantation using three-random-point marking method: A prospective pilot study

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600121114
Enrollment
Unknown
Registered
2026-03-25
Start date
2024-10-30
Completion date
Unknown
Last updated
2026-03-30

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

Conditions

Cataract

Interventions

Group 1: Novice doctors and patients with dilated pupils:Using a colored blunt needle, mark three points on the limbus of the cornea (two horizontal points and a random third point). Measure the axial
Group 2: Novice doctors and patients with small pupils:Using a colored blunt needle, mark three points on the limbus of the cornea (two horizontal points and a random third point). Measure the axial p
Group 3: Experienced doctors and patients with small pupils:Using a colored blunt needle, mark three points on the limbus of the cornea (two horizontal points and a random third point). Measure the ax

Sponsors

Guangdong Provincial People's Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
50 Years to 90 Years

Inclusion criteria

Inclusion criteria: 1. Patients aged 50-90 years old; 2. Diagnosed with cataracts based on clinical manifestations, laboratory test results, and imaging examinations; 3. Patients who have a need for cataract surgery.

Exclusion criteria

Exclusion criteria: 1. Patients with other ocular fundus diseases that affect the interpretation of examination results; 2. Patients who cannot cooperate with ophthalmic examinations or cannot complete follow-up; 3. Patients who develop other severe systemic diseases during follow-up that may affect the examination results.

Design outcomes

Primary

MeasureTime frame
Axial position of intraocular lens;

Countries

China

Contacts

Public ContactShuilian Chen

Guangdong Provincial People's Hospital

chenshuilian@gdph.org.cn+86 176 6604 8329

Outcome results

None listed

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