Normative visual acuity in infants and preschool-aged children in Sydney

作者：Leone Jody F; Mitchell Paul; Kifley Annette; Rose Kathryn A^*

来源：Acta Ophthalmologica, 2014, 92(7): e521-e529.

DOI：10.1111/aos.12366

• ATS HOTV EVA
• logMAR VA
• population-based
• preschool children
• teller acuity cards II
• visual acuity

PurposeTo provide population-based normative visual acuity (VA) by age, in children participating in the Sydney Paediatric Eye Disease Study aged 6 to <72months.
MethodsMonocular VA was measured using the Amblyopia Treatment Study (ATS HOTV) protocol (24 to <72months). Some children were also tested using linear ETDRS or HOTV logMAR VA charts (30 to <72months). If unable to perform recognition acuity, the Teller Acuity Cards II (TAC II) was performed (6 to <42months). Children with significant refractive error or ocular disease were excluded.
ResultsImprovement in VA with age was shown on all three vision tests (all p<0.0001). Mean VA using ATS HOTV (n=836) was 0.13 logMAR (6/8) at <36months, which improved to -0.01 (6/6) at 66 to <72months. Mean ETDRS/HOTV (n=399) VA was 0.26 logMAR (6/11) at <36months, which improved to 0.1 (6/7.5) at 66 to <72months. Mean monocular TAC II (n=442) was 5.7 cycles/degree (0.72 logMAR) at 6 to <9months and improved to 12.4 cycles/degree (0.38 logMAR) at age 30 to <33months. Associations with ATS HOTV VA included prematurity (p=0.027) and socio economic status (SES) factors such as home ownership (p=0.039) and employment of one (p=0.019) or both parents (p=0.003).
ConclusionsVA norms in children improved with age and were different according to the VA test used. Low SES was associated with poorer VA, supporting the need for test specific VA norms to be established for different populations. The ATS HOTV appears to be the best test to use for vision screening due to its lower false positive referral rate.

• 出版日期2014-11