Multiple-stimulus presentation and voice control in automated perimetry.
In all, 55 eyes of 55 patients were examined prospectively in random order with the Humphrey field analyzer [central field 76 points, full threshold strategy, single-stimulus presentation, response-button control (HFA 1); central field 76 points, defect-depth strategy, response-button control (HFA 2)] and the Dicon TKS-4000 [central field 76 points, defect-depth strategy, multiple-stimulus presentation, response-button control (DIC 1); central field 76 points, defect-depth strategy, multiple-stimulus presentation, voice control (DIC 2)]. Some 26 patients (47%) had glaucomatous field defects, 7 patients (13%) had lesions of the visual pathway, 5 patients (9%) had normal fields. The other 17 patients (31%) had field defects due to vascular lesions of the retina or the optic nerve, retrobulbar neuritis, cataract, dysthyroid optic neuropathy, disorders of the macula, or human immunodeficiency virus (HIV) retinopathy. The mean testing time for the whole study population was 5.2 +/- 2.7 min for DIC 1. The difference from the mean testing time for HFA 2 (6.4 +/- 2.7 min) is statistically significant (p = 0.0013). DIC 2 reduces the mean testing time to 4.9 +/- 2.6 min. The difference from DIC 1 is not statistically significant (p = 0.8110). A multiple-stimulus presentation and voice control seem to be useful methods to reduce the testing time in automated perimetry without a loss of accuracy. Voice control, as used in the DICON TKS 4000, still has to be improved, however.
Mueller
A J
AJ
Universitäts-Augenklinik, München, Federal Republic of Germany.
Lachenmayr
B J
BJ
Eckstein
A
A
Hölzl
M
M
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005128:Eye Diseases / Q000503:physiopathology; D005260:Female; D005901:Glaucoma / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010775:Photic Stimulation; D011446:Prospective Studies; D011897:Random Allocation; D012684:Sensory Thresholds; D014786:Vision Disorders / Q000503:physiopathology; D058609:Visual Field Tests / Q000379:methods*; D014794:Visual Fields; D014796:Visual Perception