Comparison of Critical Flicker Fusion Versus Automated Visual Fields in the Detection of Early Glaucoma
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.
|Study Design:||Observational Model: Cohort
Time Perspective: Prospective
|Official Title:||Comparison of Critical Flicker Fusion vs. Automated Visual Fields in the Detection of Early Glaucoma|
- Difference of mean deviation of glaucoma suspects from controls between critical flicker fusion and automated visual fields. [ Time Frame: 1 visit (1 day) ] [ Designated as safety issue: No ]
|Study Start Date:||February 2010|
|Study Completion Date:||February 2011|
|Primary Completion Date:||February 2011 (Final data collection date for primary outcome measure)|
Patients with no evidence of glaucoma or as a suspect with normal intraocular pressure, normal cup to disc ratio with no other ocular pathology and a normal ophthalmic exam.
Patients with abnormal cup to disc ratio or increased intraocular pressure (>21mm/Hg) with an otherwise normal ophthalmic exam.
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.
|United States, New York|
|Nassau University Medical Center|
|East Meadow, New York, United States, 11554|
|Principal Investigator:||Colin Scott, MD||Nassau University Medical Center|