NCT00818532

Brief Summary

To assess which commercially available measurement device is most accurate in measuring low (\< 1.0 D) degrees of corneal astigmatism.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
50

participants targeted

Target at P25-P50 for all trials

Timeline
Completed

Started Dec 2008

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

December 1, 2008

Completed
1 month until next milestone

First Submitted

Initial submission to the registry

January 6, 2009

Completed
1 day until next milestone

First Posted

Study publicly available on registry

January 7, 2009

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2009

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2009

Completed
Last Updated

April 9, 2012

Status Verified

July 1, 2009

Enrollment Period

4 months

First QC Date

January 6, 2009

Last Update Submit

April 6, 2012

Conditions

Astigmatism

Keywords

Corneal astigmatismLow diopterCorneal measurementCorneal astigmatism < 1 Diopter

Outcome Measures

Primary Outcomes (1)

  • Measurement of corneal power

    Day 1

Study Arms (1)

1

Measurement device

Eligibility Criteria

Age50 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

community sample

You may qualify if:

  • years of age and older
  • Proof of eye exam within the last 3 months
  • Corneal astigmatism of \<1.0 diopter

You may not qualify if:

  • Prior history of refractive or corneal surgery
  • Corneal trauma/disease
  • Intraocular surgery

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Alcon Call Center for Trial Locations

Fort Worth, Texas, 76134, United States

Location

MeSH Terms

Conditions

Astigmatism

Condition Hierarchy (Ancestors)

Refractive ErrorsEye Diseases

Study Design

Study Type
observational
Time Perspective
PROSPECTIVE
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

January 6, 2009

First Posted

January 7, 2009

Study Start

December 1, 2008

Primary Completion

April 1, 2009

Study Completion

April 1, 2009

Last Updated

April 9, 2012

Record last verified: 2009-07

Locations

US(1)