Preliminary clinical validation of a new picture–based visual acuity test in children with amblyopia: a comparison of The Auckland Optotypes and crowded logMAR letters

Abstract

Background/aimsAmblyopia is the most common visual deficit in children and accurate visual acuity (VA) assessment is essential for diagnosis. While ETDRS high-contrast logMAR VA is the reference standard test for adults, less agreement exists for pre-literate children. A new picture optotype acuity test (The Auckland Optotypes; TAO) has shown favourable comparison to letter acuity charts but has not yet been evaluated in children with amblyopia. This study aimed to compare visual acuity (VA) obtained using TAO to crowded logMAR letters in children age 5-8 years with amblyopia.

Proof-of-concept evaluation of prototype mobile application for parents/carers monitoring visual acuity in young children using pictorial optotypes

“…OKKO-Health have developed a VA-app for children, which includes the pictorial Auckland Optotypes (TAO). 1 Here we report our findings of in-clinic testing of a prototype in children with a wide range of eye conditions and VAs.This work was approved as service evaluation by Moorfields Eye Hospital (reference 603). Between 14/04/ 2020 and 15/05/2020 we approached consecutive children under the age of 16 years attending our clinics.…”

“…OKKO-Health have developed a VA-app for children, which includes the pictorial Auckland Optotypes (TAO). 1 Here we report our findings of in-clinic testing of a prototype in children with a wide range of eye conditions and VAs.…”