Color perimetry with personal computer.
Color visual field analysis has proven highly sensitive for early visual impairments diagnosis in M. S., yet it has never attained widespread popularity usually because the procedure is difficult to standardize, the devices are costly, and the test is fatiguing. We propose a computerized procedure running on standard PC, cost effective, clonable, and easy handled. 264 colored patches subtending 1 degree angle of vision, with selected hues and low saturation levels are sequentially and randomly displayed on gray equiluminous background of the PC screen subtending 24 degrees x 40 degrees angle of vision. The subject is requested to press a switch at the perception of the stimulus. The output provides colored maps with quantitative informations. Comparison between normals and a selected population of Patients with Multiple Sclerosis and with Glaucoma without luminance visual field defects, showed high statistical difference.
Accornero
N
N
Dipartimento di Scienze Neurologiche, University of Rome La Sapienza.
Capozza
M
M
Rinalduzzi
S
S
De Feo
A
A
Filligoi
G C
GC
Capitano
L
L
D000328:Adult; D000704:Analysis of Variance; D003119:Color Perception Tests / Q000295:instrumentation*; D005260:Female; D005902:Glaucoma, Open-Angle / Q000175:diagnosis; D006801:Humans; D008297:Male; D008838:Microcomputers; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000175:diagnosis; D010865:Pilot Projects; D012680:Sensitivity and Specificity; D058609:Visual Field Tests / Q000295:instrumentation*