Table 2 Findings of ophthalmological examinations
From: Low vision due to cerebral visual impairment: differentiating between acquired and genetic causes
Ocular findings | Affected N/Available N (%) |
|---|---|
Myopia < -4 | 13/171 (8%) |
Hypermetropia > +4 | 29/171 (17%) |
Visual acuity < 0.05 or <1.6 cycles/cm at 55 cm | 62/309 (20%) |
Strabismus | 226/295 (77%) |
Nystagmus | 113/270 (42%) |
Eye movement disorders | 100/283 (35%) |
Visual field defect | 149/249 (60%) |
Hemianopsia | 28/149 (19%) |
Upper or lower visual field defect | 37/149 (25%) |
Constriction of visual field | 84/149 (56%) |
(Partial) pale optic disc | 128/293 (44%) |
Visual behavior/ higher visual disorders | Percentage |
Fluctuating visual performances | 31% |
Fixation abnormalities | 45% |
Looking away from the target | 19% |
Crowding | 8% |
Problems with object/face recognition | 7% |
Staring at lights | 15% |
Auditive stimuli dominates | 9% |