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PubMed · 9917801

Continuous visual field test supervision may not always be necessary.

R E Van Coevorden·R P Mills·Y Y Chen·H S Barnebey
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Abstract

OBJECTIVE: To assess the effect of supervision on computerized visual field (VF) performance and to determine what patient characteristics predict poor unsupervised performance. DESIGN: Randomized, crossover, cross-sectional, clinical trial. PARTICIPANTS: Two hundred unselected patients with definite or suspect glaucoma or neuro-ophthalmic VF indication participated. INTERVENTION: All patients completed two 30-2 tests of one eye on a Humphrey perimeter, one with continuous active technician supervision and one without supervision after the initial 2 minutes of the test. MAIN OUTCOME MEASURES: Visual field reliability and global VF indices were measured. RESULTS: Supervision had a positive effect on overall reliability (P = 0.04) but not on individual reliability parameters or any of the global VF indices. There was no difference between Humphrey Field Analyzers I and II in the need for supervision. Predictors of need for supervision were low educational level and a prior test result with false-positive responses. Predictors of an unreliable test were advanced age and a prior test with a high proportion of fixation losses. CONCLUSION: Supervision is necessary for those with risk factors for unsatisfactory perimetry such as advanced age, low level of formal education, and prior test results with false-positive responses or high fixation losses; in the remainder, omission of supervision can be considered.

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AgedCross-Sectional StudiesFalse Positive ReactionsGlaucomaHumansMonitoring, PhysiologicOcular HypertensionPredictive Value of TestsReproducibility of ResultsVisual Field TestsVisual FieldsClinical TrialJournal ArticleRandomized Controlled TrialResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, P.H.S.

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R E Van Coevorden, R P Mills, Y Y Chen, H S Barnebey. 1999. Continuous visual field test supervision may not always be necessary.. https://doi.org/10.1016/s0161-6420(99)90016-7

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