Comparison of Critical Flicker Fusion Versus Automated Visual Fields in the Detection of Early Glaucoma

Comparison of Critical Flicker Fusion vs. Automated Visual Fields in the Detection of Early Glaucoma

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01076114

Enrollment

Registered

2010-02-25

Start date

2010-02-28

Completion date

2011-02-28

Last updated

2011-03-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Glaucoma

Brief summary

The purpose of this study is to evaluate if critical flicker fusion is a more reliable method for detection of early glaucoma compared to automated visual fields in comparison to subjects without evidence of glaucoma or optic nerve disease.

Detailed description

Our hypothesis is that critical flicker fusion (CFF) is a more reliable method for detection of early glaucoma compared to automated visual fields in comparison to subjects without evidence of glaucoma or optic nerve disease. We aim to evaluate the structure of the optic nerve and compare it to results of visual fields and CFF. The CFF will also be correlated with intraocular pressure (IOP) measurements to observe if it may be more closely related than visual fields. This may become an additional tool to detect glaucoma in those with unreliable visual fields or who are unable to perform a visual field from physical or mental limitations.

Interventions

None listed

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

Inclusion: * Glaucoma Suspects: * Abnormal optic disc appearance with increased cup to disc ratio, or * Increased intraocular pressure \>21 in either eye * Control Subjects: * Normal appearing optic discs * Normal intraocular pressure (\<21) Exclusion: * Other ocular pathology * History of seizures or epilepsy

Design outcomes

Primary

Measure	Time frame
Difference of mean deviation of glaucoma suspects from controls between critical flicker fusion and automated visual fields.	1 visit (1 day)

Countries

United States

Outcome results