The effect of pars plana vitrectomy combined with phacoemulsification cataract surgery in vitreoretinal patients with crystalline lens: a perspective multicenter clinical study.

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2000040400

Enrollment

Unknown

Registered

2020-11-28

Start date

2020-11-24

Completion date

Unknown

Last updated

2021-02-22

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

Conditions

Diabetes retinopathy

Interventions

experimental group:combined surgery

control group:subsequent surgery

Eligibility

Sex/Gender

Male

Age

45 Years to 65 Years

Inclusion criteria

Inclusion criteria: (1) Proliferative diabetes retinopathy (4-6 stage); (2) Aged over 45 years old; (3) mild-moderate lens opacities (LOCS III: C3N4P3 or below); (4) recognition of at least one alphabet in ETDRS chart.

Exclusion criteria

Exclusion criteria: (1) Long-standing retinal detachment (more than three months), macular affected; (2) Low Vision or blind on the other eye; (3) Macular degeneration, including age-related macular degeneration and Polypoidal choroidal vasculopathy; (4) Ocular trauma; (5) Glaucoma; (6) Hereditary retinopathy; (7) severe lens opacities before the surgery (LOCS III: C4N5P4 or above).

Design outcomes

Primary

Measure	Time frame
visual acuity;	—

Secondary

Measure	Time frame
VFQ-25;complications;	—

Countries

China

Contacts

Public ContactMingxing Wu

Zhongshan Ophthalmic center, Sun Yat-sen University

wumingx@mail.sysu.edu.cn+86 13822119558

Outcome results

None listed

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