Accuracy of Holladay 2 Formula in the Absence of Lens Thickness

May 2, 2013 updated by: Sabong Srivannaboon, Mahidol University

Accuracy of Holladay 2 Formula Using IOLMaster Parameters in the Absence of Lens Thickness

Hypothesis: Holladay 2 formula is still accurate even used without lens thickness data.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

143

Phase

  • Not Applicable

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

  • Thailand
      • Bangkok, Thailand, 10700
        • Siriraj Hospital

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

44 years to 89 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • patients with cataract

Exclusion Criteria:

  • previous ocular diseases
  • previous ocular surgery

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

  • Primary Purpose: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Mean absolute errors, median absolute errors
Device: optical biometric measurement (IOLMaster)
IOLMaster version 5.4 was used to measure the patients' optical biometry by non contact technique.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
mean absolute error of Holladay2 formula
Time Frame: 6 months
IOLMaster version 5.4 was used to measure the patients' optical biometry by non contact technique.
6 months

Collaborators and Investigators

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

Sponsor

Mahidol University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

June 1, 2012

Primary Completion (Actual)

September 1, 2012

Study Completion (Actual)

December 1, 2012

Study Registration Dates

First Submitted

April 30, 2013

First Submitted That Met QC Criteria

May 2, 2013

First Posted (Estimate)

May 3, 2013

Study Record Updates

Last Update Posted (Estimate)

May 3, 2013

Last Update Submitted That Met QC Criteria

May 2, 2013

Last Verified

April 1, 2013

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Si343/2012

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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