Abstract
Autism is a condition in which abnormal development of the brain takes place, manifesting in the first 3 years of life. Visual impairment is one of the major factors of autism spectrum disorder (ASD), and measurement of visual impairment is necessary for proper management of the disorder. The purpose of this study is to determine the frequency of visual impairment associated with ASD in Lahore Pakistan. A descriptive cross-sectional study was conducted. A convenient and purposive sample of 127 students enrolled in various autism schools of Lahore was enrolled. Written informed consent of teacher’s autistic children was taken. Children having diseases like cerebral palsy, other developmental disorders, and/or serious cognitive disability were excluded from this study. Participant’s undergone ocular assessment including visual acuity, ocular motility examination, refraction, and fundoscopy. Data analysis was performed using SPSS-20 and Pearson’s chi-square analysis was conducted to determine the associations of refractive error and squint with ASD. A total of 127 participants were included in this study, of which 77 (60.6%) were male and 50 (39.4%) were female. More than 60% were emmetropes (having no refractive errors), 19 (15%) were having myopes, 15 (11.8%) were hypermetropic, and 9 (7.1%) were Astigmatic, while 20 were diagnosed with a squint. The major cause of visual impairment in autistic children was refractive errors 33.8% and squint 15.7%. A high frequency of visual impairment was present in autistic children in Lahore autistic schools. As vision is a basic right so we have to pay attention also toward autistic children, in that way every child should have screened for factors that are responsible for visual impairments, Identifying refractive errors in these children early and providing appropriate corrective lenses may help optimize their visual functioning and impact their activities of daily life positively.
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