Photometric compliance of standard and digital infant acuity tests

Vivas, G. and Livingstone, I.A.T. and Cheema, A. and Hamilton, R. and Giardini, M.E. (2019) Photometric compliance of standard and digital infant acuity tests. In: BioMedEng19, 2019-09-05 - 2019-09-06.

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Amblyopia or “lazy eye” affects approximately 2–5% of the general population in the UK[1]. Treatment must be started as early as possible as it is less effective after age 8[2]. The current gold standards for infant acuity testing are based on printed cardboard targets (‘standard tests’) and have been in place for almost 35 years[3]. In spite of this, no national nor international standard criteria are in place to quality assure them. Electronic platforms show promise to replace card-based tests[4]. However, the fast-changing nature and photometric differences across manufacturers of electronic devices makes them potentially inaccurate when used for visual testing[5]. This work studied the photometric compliance of three standard tests (Teller cards, Keeler cards, Lea Paddles) and four electronic displays (phone, tablet, laptop and 4k monitor).