A-mode vs PalmScan Ultrasonography: Biometric Measurements.

May 29, 2024 updated by: Asociación para Evitar la Ceguera en México

Standard A-mode Ultrasonography vs PalmScan Ultrasonography: Biometric Measurements.

Ultrasonography has become a critical ancillary test in the clinical practice of ophthalmology. It is commonly used as a standardized method for assessing intraocular biometry. The PalmScan ultrasonography (PsU) is a portable A-scan device that uses the same principles as the standard A-scan. The aim of the study is to compare the reliability of their measurements, in order to use them indistinctively.

Study Overview

Status

Withdrawn

Conditions

Intervention / Treatment

Study Type

Observational

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Mexico
    • DF
      • Mexico, DF, Mexico, 04030
        • Asociación Para Evitar la Ceguera en México

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

50 years to 90 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Sampling Method

Probability Sample

Study Population

All patients who need axial length calculation.

Description

Inclusion Criteria:

  • Patients with indication for a standard A-mode ultrasound

Exclusion Criteria:

  • No superficial anormalities.
  • Patients with external injuries.
  • Intraocular silicon oil.
  • Retinal detachment
  • Significant ocular pathologies.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
1
PalmScan biometric group
Device: PalmScan A2000 ultrasonography system (Micro Medical Devices, Calabasas, CA)
PalmScan biometric measurements
2
A-mode ultrasonography biometric group
Device: Standard A-mode ultrasound (Eye Cubed™, Ellex, Adelaide, Australia).
A-mode biometric measurements group

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
axial length (AL).
Time Frame: during examination
during examination
Anterior Chamber Deep (ACD)
Time Frame: during examination
during examination
Lens Thickness (LT)
Time Frame: during examination
during examination

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Asociación para Evitar la Ceguera en México

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 1, 2008

Primary Completion (Actual)

December 1, 2008

Study Completion (Actual)

December 1, 2008

Study Registration Dates

First Submitted

December 3, 2008

First Submitted That Met QC Criteria

December 6, 2008

First Posted (Estimated)

December 9, 2008

Study Record Updates

Last Update Posted (Actual)

May 30, 2024

Last Update Submitted That Met QC Criteria

May 29, 2024

Last Verified

May 1, 2024

More Information

Terms related to this study

Other Study ID Numbers

  • APEC-037

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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