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Detection vision development in infants and toddlers with congenital vision disorders and profound‐severe visual impairment
journal contribution
posted on 2023-07-26, 15:03 authored by Alison T. Salt, Michelle A. O’Reilly, Elena Sakkalou, Naomi J. DaleAim:
To investigate detection vision development in infants and toddlers with congenital disorders of the peripheral visual system (CDPVS) and severe to profound visual impairment (SVI/PVI).
Method:
This was a longitudinal observational investigation of a cohort of infants with CDPVS (entry age 8–16mo) followed up 12 months later. Detection vision (Near Detection Scale [NDS]) and resolution acuity (Keeler Acuity Cards [KAC]) were assessed at each time point. Relationships between detection vision, resolution acuity, and age were investigated.
Results:
The study cohort comprised 80 children (39 females, 41 males), mean age 13 months (Time 1) and 26 months (Time 2); 22 (27.5%) with PVI (light perception at best) and 58 (72.5%) with SVI (basic ‘form’ vision) at Time 1. All children achieved a measure with the NDS, however only 35 per cent and 56 per cent at Time 1 and Time 2 respectively did so on KAC. Those with PVI at Time 1 showed no further improvement at Time 2, but 87 per cent of children with SVI showed improvement in vision. The median change in NDS score was 1.0 (range 1–7, SD 1.68).
Interpretation:
Vision development continues after 12 months of age in many toddlers if they have basic ‘form’ vision. A measure of detection vision is feasible in very young children when resolution acuity measurement is not achievable.
History
Refereed
- Yes
Volume
62Issue number
8Page range
962-968Publication title
Developmental Medicine and Child NeurologyISSN
1469-8749External DOI
Publisher
WileyLanguage
- other
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Legacy posted date
2020-07-22Legacy Faculty/School/Department
Faculty of Health, Education, Medicine & Social CareUsage metrics
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