Comparing two methods for calculating intraocular lens power during cataract surgery
Official title: Intraoperative Aberrometry vs Conventional Introcular Lens Calculation ( Barrett Universal II / Barrett True K ), Refractive and Visual Outcomes, a Prospective Study.
Run by Instituto de Oftalmología Fundación Conde de Valenciana · NCT06219252 · Data updated 2026-11-12
This study tests which method, using a special device during surgery or a formula before surgery, does a better job at calculating the right lens power for people getting cataract surgery.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 40 Years and up |
| Sex | All |
| Enrollment | 300 (estimated) |
| Sponsor | Instituto de Oftalmología Fundación Conde de Valenciana Academic / other |
| Locations | 1 site (Mexico City, Cuauhtemoc) |
| Status | Recruiting |
| Started | November 3, 2023 |
| Main results expected | November 30, 2026 |
| Study ends | December 31, 2026 |
| Registry record updated | May 14, 2025 |
| Trial ID | NCT06219252 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates include patients with senile cataract who are scheduled for phacoemulsification and have a complete biometric profile.
✕Probably not a fit
Patients with glaucoma, uncontrolled diabetic retinopathy, or other significant ocular pathologies may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This intervention compares the accuracy of intraoperative aberrometry (ORA) against the Barrett Universal II preoperative calculation for determining intraocular lens power in patients undergoing cataract surgery. The study will involve randomization and blinding of participants to ensure unbiased results. Researchers will assess changes in spherical equivalent and uncorrected distance visual acuity at 90 days post-surgery to evaluate the effectiveness of each method.
Why it matters
Potential benefit: If successful, this study could lead to improved visual outcomes for patients undergoing cataract surgery.
How similar studies have gone: Previous studies have shown small differences between intraoperative aberrometry and preoperative calculations, indicating that this approach has been explored but may still offer novel insights.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * patients with senile cataract, patients undergoing phacoemulsification, complete biometric profile, axial length calculated by interferometer. Exclusion Criteria: * glaucoma, uncontrolled diabetic retinopathy, pseudoexfoliation syndrome, aged macular degeneration , dry eye syndrome, other ocular pathologies.
Where it's running
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Instituto de oftalmología Fundación Conde de Valenciana
Mexico City, Cuauhtemoc, Mexico Recruiting
Study contacts
- Principal investigator: Angel Nava - Castañeda, Md — Instituto de Oftalmologia Conde de Valenciana
- Study coordinator: Diego Zamora - de la Cruz, Md
- Email: DIEGO.ZAMORA@INSTITUTODEOFTALMOLOGIA.ORG
- Phone: 5554421700
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.