Corneal Astigmatism Measurement Study

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

Completed

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Key information

Conditions

Astigmatism Eye Diseases Refractive Errors

Age range

50 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Alcon Call Center for Trial Locations

Fort Worth, Texas, 76134, United States

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

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

Exclusion criteria

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

Treatment and study plan

Primary outcomes

Measurement of corneal power

Time frame: Day 1

Sponsors and collaborators

Lead sponsor

Alcon Research

Industry

Registry information

Important dates

Study start: 2008
Primary completion: 2009
Study completion: 2009
First posted: Jan 7, 2009
Registry last updated: Apr 9, 2012

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed