Variability in Perimetry Study

Completed

Conditions studied: Glaucoma

In brief

Improved Assessment of Visual Field Change is a trial aimed at investigating mechanisms of visual field testing variability. The investigators have found using larger stimulus size substantially lowers short-term variability. In this study, the investigators will determine if larger stimuli detect visual field change at an earlier time. The investigators are also developing a statistical model that accounts for correlations of neighboring test locations.

Key facts

Study ID

NCT01051739

Run by

VA Office of Research and Development

People needed

180

Starts

2010-07-01

Expected to finish

2015-09-01

Last updated by the study team

2017-03-21

Who can join

Age: 18 and older, up to 99. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Mean deviation of -20 or better with 5-8 points (optimally 10 points) with a value of p= 0.05 or better on the total deviation plot
• Mild cataract with VA of 20/30 or better pinholed
• Refractive error of = to or less than 6 diopters with = or less than 3.50 diopters of cylinder
• Pupil diameter of 3 mm minimum
• Controlled hypertension, diabetes, migraine
• Pseudophakic/refractive surgery if no vision problems
• Trabeculectomy okay

You may not qualify if…

• History of other ocular or neurologic disease or surgery
• History of stroke
• Systemic disease [lupus, graves, cancer (within the last 5 yrs), AIDS, other]
• History of amblyopia
• Unreliable patient
• Frequently misses appointments
• Tests poorly
• Ocular hypertension
• Retinal problems
• Diabetic retinopathy
• Neurological disease (IIH, ON, AION)
• Cancer not in remission for the last 5 years
• Vein or artery occlusions
• Macular degeneration
• Trauma with vision loss
• Ocular inflammation (pars planitis, iritis, temporal aeuritis)

Where it is running

• Iowa City VA Health Care System, Iowa City, IA — Iowa City, Iowa, United States

Full record on ClinicalTrials.gov

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