The Kay Picture Test Screening Book is a compact A5 size book comprising an abridged single crowded and linear crowded picture vision testing option for vision screening.
It comprises distance LogMAR sizing from 1.0 to -0.10 at three metres, plus it includes a single crowded near vision test card and a matching card with both crowded and uncrowded pictures.
There is a choice of three or four pictures at each acuity size. Sizes 0.3 to -0.1 have a single crowded and a row of five pictures per page to suit all ages from as young as 18 months to school age.
New, fully-researched picture optotypes that provide a reliable visual acuity measurement comparable with ETDRS. The six pictures have an improved and modernised design with consideration of recent research evidence on spacing and crowding. The pictures were shown to be the most recognisable to children under 30 months and with minimum variability in legibility across the optotypes.