Long‐term follow‐up of baseline learning and fatigue effects in the automated perimetry of glaucoma and ocular hypertensive patients

Abstract

The detection of change in the visual field is confounded by factors associated with the patient response. Sixteen patients who had previously undergone a training regime in automated perimetry over a short time period were followed up to evaluate the longer term learning and fatigue effects. The patients, all attending a glaucoma clinic, were originally naive to automated perimetry. The training period had comprised examination of the right followed by that of the left eye with the Humphrey Field Analyser 630 on each of 3 successive days and again after an interval of 12 days. The follow-up study comprised two examinations on 2 successive days after a follow-up period of between 5 and 15 months (mean 8.7 months). The learning effects present over the initial training period were not observed at the follow-up whilst the fatigue effects in the fellow eye were still apparent.

Test–Retest Variability of Microperimetry Using the Nidek MP1 in Patients with Macular Disease

“…[37][38][39][40] The effect of perimetric experience on field test results has been described in automated perimetry when patients perform the test over several sessions. 41,42 In addition, other sources of variability include those related to the patient (age, concentration, understanding, pupil size, comorbidities, extent of local damage, test point locus) 41,[43][44][45][46][47][48][49] and the instrument (size and duration of stimulus, test strategy, and starting stimulus luminance level). 50 -52 In this study, we tried to reduce variability due to learning by providing pretest training to allow familiarization with (1) stimulus target size, location, and luminance as well as (2) the correct operation of the response trigger.…”

The Repeatability of Mean Defect with Size III and Size V Standard Automated Perimetry

“…This effect was smaller than the learning effects usually found. [12][13][14][15] We believe this was due to cross learning from having four visual field tests performed at each visit.…”

Structure-Function Relationship between Frequency-Doubling Technology Perimetry and Optical Coherence Tomography in Glaucoma

“…Because of the importance of the early detection of chronic simple glaucoma, many different types of perimetries and numerous perimetric techniques have been used [13,21]. FDT offers the potential advantage of reducing the testing time and thereby decreasing the patient's loss of concentration and fatigue, which can decrease the reproducibility and accuracy of the tests [37]. Previous studies found that a small percentage of perimetric novices had a learning effect when performing FDT tests [38,39,40].…”