TABLE.
Blindsight Participant and Blindsight-Negative Control Characteristics
| Characteristic | Blindsight, n = 34 | Blindsight-Negative, n = 35 | p |
|---|---|---|---|
| Mean age, yr (SD, range) | 49.2 (14.5, 19–77) | 55.8 (14.6, 24–78) | 0.064 |
| Women, n (%) | 13 (38.2) | 7 (20.0) | 0.098 |
| Time since injury when testing performed, mo (SD, range) | 103.5 (168.7, 1–780) | 37.9 (76.4, 3–384) | 0.040 |
| Laterality of field deficit, n (%) | 0.28 | ||
| Right | 20 (58.8) | 16 (45.7) | — |
| Left | 14 (41.2) | 19 (54.3) | — |
| Type of field deficit, n (%) | 0.94 | ||
| Hemianopia | 25 (73.5) | 26 (74.3) | — |
| Quadrantanopia or partial hemianopia | 9 (26.5) | 9 (25.7) | — |
| Laterality of brain lesion, n (%) | 0.28 | ||
| Right | 14 (41.2) | 19 (54.3) | — |
| Left | 20 (58.8) | 16 (45.7) | — |
| Primary reported pathology of brain injury leading to vision loss, n (%) | 0.73 | ||
| Stroke/hemorrhage | 26 (76.5) | 28 (80.0) | — |
| Other | 8 (23.5) | 7 (20.0) | — |
| Tumor | 3 (8.8) | 2 (5.7) | — |
| Postsurgical | 4 (11.8) | 3 (8.6) | — |
| Trauma | 3 (8.8) | 1 (2.9) | — |
| Developmental | 1 (2.9) | 2 (5.7) | — |
| Vascular malformation | 1 (2.9) | 2 (5.7) | — |
| Preexisting brain disease [prior to injury that caused vision loss], n (%) | 5 (14.7) | 6 (17.1) | 0.79 |
| Vascular malformation | 1 (2.9) | 2 (8.6) | — |
| Epilepsy | 1 (2.9) | 2 (5.7) | — |
| Tumor | 3 (8.8) | 2 (5.7) | — |
| Structural imaging used for mapping, n (%) | 0.25 | ||
| MRI | 32 (94.1) | 30 (85.7) | — |
| CT | 2 (5.9) | 5 (14.3) | — |
| Modality used in testing, n (%) | |||
| Moving | 18 (52.9) | 18 (51.4) | 0.90 |
| Static | 19 (55.9) | 22 (62.9) | 0.56 |
CT = computed tomography; MRI = magnetic resonance imaging; SD = standard deviation.