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A Comparative study of three different Intraocular lens power calculation formulae in patients undergoing cataract surgery

Comparative Evaluation of the Predictive Accuracy of Kane, Ladas super formula and Barrett Universal II Formula in Patients Undergoing Cataract Surgery: A Randomized Trial - NIL

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
CTRI
Registry ID
CTRI/2026/04/108394
Enrollment
180
Registered
2026-04-15
Start date
Unknown
Completion date
Unknown
Last updated
2026-04-27

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

Conditions

Health Condition 1: H259- Unspecified age-related cataract

Interventions

Intervention1: Using different IOL power calculation formulae: A one-time intraocular lens power calculation will be performed using the Kane formula, Ladas Super Formula, and Barrett Universal II for

Sponsors

Dr Pratima Sahu
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: Participants included are Patients with senile cataract undergoing routine phacoemulsification cataract surgery with in the bag monofocal Intraocular lens implantation. Preoperative biometry obtained using IOL Master 500 or equivalent optical biometer. Eyes with axial lengths between 20 millimeters and 26 millimeters.

Exclusion criteria

Exclusion criteria: Eyes with prior ocular surgery e.g., refractive surgery, vitrectomy. Eyes with corneal pathology, macular pathology, or other ocular comorbidities. Complicated cataract surgeries e.g., posterior capsular rupture. Eyes with astigmatism more than 1 diopter requiring toric Intraocular lenses.

Design outcomes

Primary

MeasureTime frame
Mean absolute error in predicted postoperative refraction among the Kane, Ladas Super Formula, and Barrett Universal II formula.Timepoint: 4 weeks after cataract surgery—

Secondary

MeasureTime frame
Percentage of eyes within 0.25 D, 0.50 D, & 1.00 D of the predicted refraction for each formulaTimepoint: Four weeks after cataract surgery;Performance of each formula across different axial length subgroups.Timepoint: Four weeks after cataract surgery—

Countries

India

Contacts

Public ContactDr Pratima Sahu

AIIMS RAIPUR

drpratimasahu@aiimsraipur.edu.in9861262799

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: May 1, 2026