| Name | Value |
|---|---|
| NAME | 6540-439617 |
| LIFE EXPECTANCY | 10 |
| BRIEF DESCRIPTION | TACH VISUAL FIELD TST |
| NOMENCLATURE | TACHISTOSCOPE, VISUAL FIELD TESTING. AN INSTRUMENT INCLOSED IN A FUNCTIONING CABINET WITH AN ULTRAVIOLET LIGHT ASSEMBLY, WHICH UTILIZES THE PRINCIPLE OF FLASH PRESENTATION OF SIMPLE ABSTRACT PATTERNS OF LINES, DOTS, AND CROSSES TO THE FIXING EYE FOR THE PURPOSE OF RAPIDLY DETECTING DEFECTS IN THE VISUAL FIELD. |