Postoperative intraocular lens position in phaco-vitrectomy and phacoemulsification alone.

Postoperative intraocular lens position in phaco-vitrectomy and phacoemulsification alone. - Postoperative intraocular lens position

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000045158

Enrollment

360

Registered

2021-08-15

Start date

2021-07-01

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Cataract Epiretinal/Epimacular membrane Macular hole Vitreomacular traction syndrome Vitreous hemorrhage Retinal detachment Diabetic macular retinopathy Central/Branch retinal vein occlusion Subretinal hemorrhage Vitreous opacity

Interventions

1-piece acrylic lens (Clareon, Alcon co.) 3-piece acrylic lens (Avansee, Kowa co.) 3-piece larger optical diameter acrylic lens ((N)X-70, Santen co.)

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients who have the following diseases and who need phacoemulification or phacovitrectomy with intraocular lens implantation. 1. Cataract 2. Epiretinal/Epimacular membrane 3. Macular hole 4. Vitreomacular traction syndrome 5. Vitreous hemorrhage 6. Retinal detachment 7. Diabetic macular retinopathy 8. Central/Branch retinal vein occlusion 9. Subretinal hemorrhage 10. Vitreous opacity

Exclusion criteria

Exclusion criteria: 1. Patients with difficulty to be implanted intraocular lens fixation in the bag 2. Patients who implant an intraocular lens different from those used in this study. 3. Patients who hope to be implanted the specific intraocular lens. 4. Patients who should be implanted the specific intraocular lens.

Design outcomes

Primary

Measure	Time frame
The position of intraocular lenses at 6 month post-operation.	—

Secondary

Measure	Time frame
Lens position at 1 and 3 m postoperatively Comparison of postoperative refractive error by IOLs Comparison of postoperative refractive error by surgical procedure Comparison of postoperative refractive error by type of gas tamponade Comparison of postoperative refractive error by IOL power determination formula Higher order aberrations (tilt/deviation) by IOL type Comparison by disease Comparison of the shape of the IOL optical cover by anterior capsule	—

Measure

Time frame

Lens position at 1 and 3 m postoperatively Comparison of postoperative refractive error by IOLs Comparison of postoperative refractive error by surgical procedure Comparison of postoperative refractive error by type of gas tamponade Comparison of postoperative refractive error by IOL power determination formula Higher order aberrations (tilt/deviation) by IOL type Comparison by disease Comparison of the shape of the IOL optical cover by anterior capsule

—

Countries

Japan

Contacts

Public ContactSho Yokoyama

Japan Community Healthcare Organization Chukyo Hospital Ophthalmology

yokoyama@chukyogroup.jp052-691-7151

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026