Abstract
• Background
The extent of any learning and fatigue effects in blue-on-yellow (B-Y) perimetry is unknown. The within- and between-eye changes in B-Y normal sensitivity at a single visit and between visits was investigated as a function of previous experience in white-on-white (W-W) perimetry and of subject age.
• Methods
Sixty-one normal subjects — 22 young (range 20–34 years) and 39 elderly (range 51–80 years) — assigned to one of four groups based upon perimetric experience and age underwent B-Y perimetry on four separate occasions using Program 30-2 of a modified Humphrey Field Analyser 640. Perimetry was performed for both eyes on three consecutive days and again one week later. Global, hemifield and annular mean sensitivities and global short-term fluctuation were calculated for each eye at each visit.
• Results
Mean sensitivity was higher in the first eye examined and increased over the 3 days. The increase in mean sensitivity was similar for each eye and was independent of perimetric experience and age. Short-term fluctuation decreased over the 3 days, regardless of eye and experience, but was more pronounced for the younger age group. The extent of all improvements varied considerably between subjects.
• Conclusions
Improvements in B-Y perimetric performance occured as the familiarity with the test increased, regardless of previous W-W experience. Failure to account for such improvement could reduce the efficiency of B-Y perimentry.
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Wild, J.M., Moss, I.D. Baseline alterations in blue-on-yellow normal perimetric sensitivity. Graefe's Arch Clin Exp Ophthalmol 234, 141–149 (1996). https://doi.org/10.1007/BF00462025
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DOI: https://doi.org/10.1007/BF00462025