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Refractive and Visual Outcomes With the ARGOS Biometer In Eyes With a History of Refractive Surgery: ARGOS Study

NCT07129980 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 20

Last updated 2025-08-24

No results posted yet for this study

Summary

The study is to evaluate the visual and refractive outcomes in eyes with prior myopic refractive surgery undergoing cataract surgery for intraocular lens (IOL) power calculations.

Conditions

  • Cataract

Interventions

DEVICE

ARGOS Biometer

The ARGOS biometer uses swept-source optical coherence tomography (SS-OCT) with a 1060 nm tunable laser to capture high-resolution B-scan images of the entire eye. This technology enables sum-of-segments (S-O-S) biometry, measuring each ocular component-corneal thickness, aqueous depth, lens thickness, and vitreous length-individually and summing these values to determine total axial length. SS-OCT provides deep tissue penetration while simultaneously capturing keratometry, white-to-white, and pupillometry data in a single scan. For keratometry measurements, the ARGOS uniquely employes SS-OCT-based telecentric keratometry, which involves projection of 16 infrared LEDs in a wider 3.0 mm ring pattern onto the cornea and calculates curvature from those reflections.

Sponsors & Collaborators

  • Vance Thompson Vision

    lead OTHER

Principal Investigators

  • John Berdahl, MD · Vance Thompson Vision Clinic Prof. LLC

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2023-07-11
Primary Completion
2025-07-03
Completion
2025-08-01
FDA Device
Yes

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07129980 on ClinicalTrials.gov