visual impairment 视力障碍 ; 视觉障碍 ; 视觉缺陷 ; 视力损害
cortical visual impairment 皮层性视损伤
impairment of visual acuity 视力减退
Blindness visual impairment 失明 ; 视觉损伤
classification of visual impairment 视力残疾分级
prevalence of visual impairment 视觉障碍出现率
psychological visual impairment 心因性视力残疾
people with visual impairment 视力障碍者
children with visual impairment 视觉障碍儿童
severe visual impairment 严重视力损伤
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