Comparing two methods for calculating intraocular lens power during cataract surgery
Intraoperative Aberrometry vs Conventional Introcular Lens Calculation ( Barrett Universal II / Barrett True K ), Refractive and Visual Outcomes, a Prospective Study.
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
| Phase | Not applicable |
|---|---|
| Study type | Interventional |
| Enrollment | 300 (estimated) |
| Ages | 40 Years and up |
| Sex | All |
| Sponsor | Instituto de Oftalmología Fundación Conde de Valenciana Academic / other |
| Locations | 1 site (Mexico City, Cuauhtemoc) |
| Trial ID | NCT06219252 on ClinicalTrials.gov |
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.
Who should consider this trial
Good fit: Ideal candidates include patients with senile cataract who are scheduled for phacoemulsification and have a complete biometric profile.
Not a fit: Patients with glaucoma, uncontrolled diabetic retinopathy, or other significant ocular pathologies may not benefit from this study.
Why it matters
Potential benefit: If successful, this study could lead to improved visual outcomes for patients undergoing cataract surgery.
How similar studies have performed: 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.
Eligibility criteria
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 this trial is running
Mexico City, Cuauhtemoc
- 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
How to participate
- Review the eligibility criteria above with your treating physician.
- Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
- Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.