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Study of Intraocular Lens Constants for the Intraocular Lens HOYA Vivinex Impress Implanted Eyes

Study of Intraocular Lens Constants for the Intraocular Lens HOYA Vivinex Impress Implanted Eyes

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-jRCT1032240342
Enrollment
900
Registered
2024-09-18
Start date
2024-09-18
Completion date
Unknown
Last updated
2026-09-14

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

Conditions

Cataract

Interventions

None listed

Sponsors

Osakabe Yasuhiro
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Patients who are 22 years old or older and who are undergoing cataract extraction with phacoemulsification and aspiration 2) Patients who are having XY1-EM implanted 3) Patients whose calculated spherical lens power is +6.0 D or higher and +30.0 D or lower 4) Patients whose postoperative corrected visual acuity can be expected to be 0.7 or better 5) Patients whose preoperative corneal astigmatism is below 1.0 D 6) Patients who can be followed-up with after surgery

Exclusion criteria

Exclusion criteria: 1) Patients who are having another ophthalmologic surgery within one month after the intraocular lens implantation 2) Patients who have a history of refractive surgery 3) Patients who have a history of any eye disease or ocular comorbidities that significantly affect their visual function 4) Patients who the principal investigator, etc., deems not appropriate as a study subject due to an accompanying general disease or eye disease

Design outcomes

Primary

MeasureTime frame
IOL constant per intraocular lens formula by biometers

Secondary

MeasureTime frame
1)Transition of uncorrected distance visual acuity 2)Post-op month 1 uncorrected intermediate visual acuity 3)Post-op month 1 uncorrected near visual acuity 4)Transition of postoperative refractive errors 5)Defects and adverse events

Contacts

Public ContactYusuke Goto

HOYA CORPORATION Medical Division

yusuke.goto@hoya.com+81-359132347

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Sep 19, 2026