title: Time-related variation in normal automated static perimetry.
abstract: The effects of phase of eye test and order of eye examined were investigated in 38 normal subjects using a customized 30-point central threshold program of the Humphrey Field Analyzer 640. This program, designed to be completed within 5 minutes, was successively repeated three times for each eye (i.e., three phases for each eye) at two visits separated by an interval of approximately 2 weeks. Both global and pointwise group mean sensitivity decreased in a time-related manner, deterioration being greater for the second eye at each visit, for both 200 ms and 100 ms stimulus durations.
authors.affiliation: Academic Department of Ophthalmology, University of Birmingham, United Kingdom.
authors.forename: A E
authors.initials: AE
authors.lastname: Searle
authors.forename: J M
authors.initials: JM
authors.lastname: Wild
authors.forename: D E
authors.initials: DE
authors.lastname: Shaw
authors.forename: E C
authors.initials: EC
authors.lastname: O'Neill
mesh_terms: D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D006801:Humans; D008875:Middle Aged; D015203:Reproducibility of Results; D013997:Time Factors; D058609:Visual Field Tests / Q000379:methods*; D014794:Visual Fields