Comparison of phaco-chop and vertical chop performed in the phacoemulsification of hard nuclear cataract

A comparative analysis of clinical efficacy and safety of phaco-chop and vertical chop performed in the phacoemulsification of hard nuclear cataract

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR1900026230

Enrollment

Unknown

Registered

2019-09-27

Start date

2020-01-01

Completion date

Unknown

Last updated

2019-09-30

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

Conditions

Cataract

Interventions

control group:phaco-chop

study group:vertical chop

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Grade 4 nucleus rated according to Emery-little lens nucleus grading system, good overall condition; no other diseases, surgical history, trauma history of the eye; less than 0.7 logMAR vision.

Exclusion criteria

Exclusion criteria: Corneal endothelial cell number <= 2000; patients do not comply with treatment or do not follow up.

Design outcomes

Primary

Measure	Time frame
cumulative dissipated energy;ultrasound time;corneal endothelial cell number;Postoperative best-corrected visual acuity;	—

Secondary

Measure	Time frame
complications;	—

Countries

China

Contacts

Public ContactHongwei Zhou

Department of Ophthalmology, Lianshui County People's Hospital Affiliated to Kangda College

leave0307@163.com+86 15851785316

Outcome results

None listed

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