منابع مشابه
Amblyopia in astigmatic preschool children
Best-corrected acuity was measured for vertical and horizontal gratings and for recognition acuity optotypes (Lea Symbols) in a group of three- to five-year-old children with a high prevalence of astigmatism. Results showed meridional amblyopia (MA) among children with simple/compound myopic or mixed astigmatism, due to reduced acuity for horizontal gratings. Children with simple/compound hyper...
متن کاملAmblyopia in astigmatic children: Patterns of deficits
Neural changes that result from disruption of normal visual experience during development are termed amblyopia. To characterize visual deficits specific to astigmatism-related amblyopia, we compared best-corrected visual performance in 330 astigmatic and 475 non-astigmatic kindergarten through 6th grade children. Astigmatism was associated with deficits in letter, grating and vernier acuity, hi...
متن کاملAmblyopia in astigmatic infants and toddlers.
PURPOSE To determine whether reduced astigmatism-corrected acuity for vertical (V) and/or horizontal (H) gratings and/or meridional amblyopia (MA) are present before 3 years of age in children who have with-the-rule astigmatism. METHODS Subjects were 448 children, 6 months through 2 years of age with no known ocular abnormalities other than with-the-rule astigmatism, who were recruited throug...
متن کاملOptical treatment reduces amblyopia in astigmatic children who receive spectacles before kindergarten.
OBJECTIVE To examine the effect of spectacle correction of astigmatism during preschool on best-corrected recognition visual acuity (VA), grating VA, and meridional amblyopia (difference between acuity for vertical versus horizontal gratings) once the children reach kindergarten. DESIGN Comparative case series. PARTICIPANTS Seventy-three astigmatic (right eye > or =1.50 diopters [D] cylinde...
متن کاملEffectiveness of screening preschool children for amblyopia: a systematic review
BACKGROUND Amblyopia and amblyogenic factors like strabismus and refractive errors are the most common vision disorders in children. Although different studies suggest that preschool vision screening is associated with a reduced prevalence rate of amblyopia, the value of these programmes is the subject of a continuing scientific and health policy discussion. Therefore, this systematic review fo...
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ژورنال
عنوان ژورنال: Vision Research
سال: 2003
ISSN: 0042-6989
DOI: 10.1016/s0042-6989(03)00014-2