Partial sight-partial achievement?
D000124:Achievement; D002648:Child; D004192:Discrimination, Psychological; D004519:Education, Special; D006801:Humans; D008131:London; D009048:Motor Skills; D011581:Psychological Tests; D011932:Reading; D013997:Time Factors; D014786:Vision Disorders / Q000150:complications*; D014796:Visual Perception