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Study on Calculation Formula of Refractive Power for the New Generation of Intraocular Lenses

Study on Calculation Formula of Refractive Power for the New Generation of Intraocular Lenses

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2300071980
Enrollment
Unknown
Registered
2023-05-31
Start date
2023-05-31
Completion date
Unknown
Last updated
2023-06-12

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

Conditions

cataract

Interventions

Case series:None

Sponsors

Tianjin Medical University Eye Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
30 Years to 90 Years

Inclusion criteria

Inclusion criteria: In 2023, routine cataract patients with no ocular complications or surgical history such as keratitis, glaucoma, retinal diseases, refractive surgery, etc. visited Tianjin Medical University Eye Hospital. These patients had corneal astigmatism less than 3D and underwent preoperative examination and approval using the master700 system. The surgery was successful without any other complications or additional operations (e.g., IOL bag implantation, LRI and sutured incisions, etc.). Only one eye was included in the study (the first eye chosen) and the IQ lens was implanted. At least one month after the operation, a visual acuity test was performed, and the corrected distance visual acuity was =0.5..

Exclusion criteria

Exclusion criteria: Patients with combined ocular complications, unsuccessful surgery with other complications, intraocular lenses not implanted in the bag, no postoperative visual acuity test performed after one month, and best corrected visual acuity less than 0.5 after one month postoperatively were excluded from the study.

Design outcomes

Primary

MeasureTime frame
Numerical error;

Countries

China

Contacts

Public ContactTian Fang

Tianjin Medical University Eye Hospital

tianfang1216@126.com+86 136 0205 6026

Outcome results

None listed

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